Home / 153,117.43-229,722.80-78,290.13

Finding the Fourth Proportional to 153,117.43, 229,722.80 and 78,290.13

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Solution

The fourth proportional to 153,117.43, 229,722.80 and 78,290.13 is: 117,459.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,117.43 : 229,722.80 = 78,290.13 : x
  2. Step 2: Convert to fraction form
    153,117.43/229,722.80 = 78,290.13/x
  3. Step 3: Cross multiply
    153,117.43x = 229,722.80 × 78,290.13
  4. Step 4: Simplify right side
    153,117.43x = 17,985,027,875.96
  5. Step 5: Solve for x
    x = 17,985,027,875.96/153,117.43
  6. Step 6: Final answer
    x = 117,459.05

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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.