Home / 90,761,009.40-136,141,514.10-83,745,988.20

Finding the Fourth Proportional to 90,761,009.40, 136,141,514.10 and 83,745,988.20

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Solution

The fourth proportional to 90,761,009.40, 136,141,514.10 and 83,745,988.20 is: 125,618,982.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,761,009.40 : 136,141,514.10 = 83,745,988.20 : x
  2. Step 2: Convert to fraction form
    90,761,009.40/136,141,514.10 = 83,745,988.20/x
  3. Step 3: Cross multiply
    90,761,009.40x = 136,141,514.10 × 83,745,988.20
  4. Step 4: Simplify right side
    90,761,009.40x = 11,401,305,633,348,734
  5. Step 5: Solve for x
    x = 11,401,305,633,348,734/90,761,009.40
  6. Step 6: Final answer
    x = 125,618,982.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.