Home / 138,834.46-191,590.68-75,172.06

Finding the Fourth Proportional to 138,834.46, 191,590.68 and 75,172.06

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Solution

The fourth proportional to 138,834.46, 191,590.68 and 75,172.06 is: 103,736.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,834.46 : 191,590.68 = 75,172.06 : x
  2. Step 2: Convert to fraction form
    138,834.46/191,590.68 = 75,172.06/x
  3. Step 3: Cross multiply
    138,834.46x = 191,590.68 × 75,172.06
  4. Step 4: Simplify right side
    138,834.46x = 14,402,266,092.40
  5. Step 5: Solve for x
    x = 14,402,266,092.40/138,834.46
  6. Step 6: Final answer
    x = 103,736.97

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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.