Home / 100,505.93-138,763.08-62,306.30

Finding the Fourth Proportional to 100,505.93, 138,763.08 and 62,306.30

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Solution

The fourth proportional to 100,505.93, 138,763.08 and 62,306.30 is: 86,022.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,505.93 : 138,763.08 = 62,306.30 : x
  2. Step 2: Convert to fraction form
    100,505.93/138,763.08 = 62,306.30/x
  3. Step 3: Cross multiply
    100,505.93x = 138,763.08 × 62,306.30
  4. Step 4: Simplify right side
    100,505.93x = 8,645,813,397.59
  5. Step 5: Solve for x
    x = 8,645,813,397.59/100,505.93
  6. Step 6: Final answer
    x = 86,022.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.