Home / 90,752.40-136,128.60-57,364.20

Finding the Fourth Proportional to 90,752.40, 136,128.60 and 57,364.20

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Solution

The fourth proportional to 90,752.40, 136,128.60 and 57,364.20 is: 86,046.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,752.40 : 136,128.60 = 57,364.20 : x
  2. Step 2: Convert to fraction form
    90,752.40/136,128.60 = 57,364.20/x
  3. Step 3: Cross multiply
    90,752.40x = 136,128.60 × 57,364.20
  4. Step 4: Simplify right side
    90,752.40x = 7,808,908,236.12
  5. Step 5: Solve for x
    x = 7,808,908,236.12/90,752.40
  6. Step 6: Final answer
    x = 86,046.30

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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.