Home / 138,747.49-191,472.12-75,085.29

Finding the Fourth Proportional to 138,747.49, 191,472.12 and 75,085.29

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Solution

The fourth proportional to 138,747.49, 191,472.12 and 75,085.29 is: 103,618.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,747.49 : 191,472.12 = 75,085.29 : x
  2. Step 2: Convert to fraction form
    138,747.49/191,472.12 = 75,085.29/x
  3. Step 3: Cross multiply
    138,747.49x = 191,472.12 × 75,085.29
  4. Step 4: Simplify right side
    138,747.49x = 14,376,738,699.75
  5. Step 5: Solve for x
    x = 14,376,738,699.75/138,747.49
  6. Step 6: Final answer
    x = 103,618.01

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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.