Home / 138,355.85-207,513.05-38,505.80

Finding the Fourth Proportional to 138,355.85, 207,513.05 and 38,505.80

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Solution

The fourth proportional to 138,355.85, 207,513.05 and 38,505.80 is: 57,752.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,355.85 : 207,513.05 = 38,505.80 : x
  2. Step 2: Convert to fraction form
    138,355.85/207,513.05 = 38,505.80/x
  3. Step 3: Cross multiply
    138,355.85x = 207,513.05 × 38,505.80
  4. Step 4: Simplify right side
    138,355.85x = 7,990,454,770.60
  5. Step 5: Solve for x
    x = 7,990,454,770.60/138,355.85
  6. Step 6: Final answer
    x = 57,752.93

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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.