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Finding the Fourth Proportional to 127,420.38, 175,861.71 and 73,737.90

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Solution

The fourth proportional to 127,420.38, 175,861.71 and 73,737.90 is: 101,770.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,420.38 : 175,861.71 = 73,737.90 : x
  2. Step 2: Convert to fraction form
    127,420.38/175,861.71 = 73,737.90/x
  3. Step 3: Cross multiply
    127,420.38x = 175,861.71 × 73,737.90
  4. Step 4: Simplify right side
    127,420.38x = 12,967,673,185.81
  5. Step 5: Solve for x
    x = 12,967,673,185.81/127,420.38
  6. Step 6: Final answer
    x = 101,770.79

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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.