Home / 138,747.50-191,472.02-75,085.28

Finding the Fourth Proportional to 138,747.50, 191,472.02 and 75,085.28

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Solution

The fourth proportional to 138,747.50, 191,472.02 and 75,085.28 is: 103,617.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,747.50 : 191,472.02 = 75,085.28 : x
  2. Step 2: Convert to fraction form
    138,747.50/191,472.02 = 75,085.28/x
  3. Step 3: Cross multiply
    138,747.50x = 191,472.02 × 75,085.28
  4. Step 4: Simplify right side
    138,747.50x = 14,376,730,233.87
  5. Step 5: Solve for x
    x = 14,376,730,233.87/138,747.50
  6. Step 6: Final answer
    x = 103,617.94

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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.