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Finding the Fourth Proportional to 137,399.04, 206,096.94 and 77,432.04

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Solution

The fourth proportional to 137,399.04, 206,096.94 and 77,432.04 is: 116,147.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,399.04 : 206,096.94 = 77,432.04 : x
  2. Step 2: Convert to fraction form
    137,399.04/206,096.94 = 77,432.04/x
  3. Step 3: Cross multiply
    137,399.04x = 206,096.94 × 77,432.04
  4. Step 4: Simplify right side
    137,399.04x = 15,958,506,501.96
  5. Step 5: Solve for x
    x = 15,958,506,501.96/137,399.04
  6. Step 6: Final answer
    x = 116,147.15

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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.