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Finding the Fourth Proportional to 132,389.87, 182,699.13 and 71,960.51

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Solution

The fourth proportional to 132,389.87, 182,699.13 and 71,960.51 is: 99,306.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,389.87 : 182,699.13 = 71,960.51 : x
  2. Step 2: Convert to fraction form
    132,389.87/182,699.13 = 71,960.51/x
  3. Step 3: Cross multiply
    132,389.87x = 182,699.13 × 71,960.51
  4. Step 4: Simplify right side
    132,389.87x = 13,147,121,865.50
  5. Step 5: Solve for x
    x = 13,147,121,865.50/132,389.87
  6. Step 6: Final answer
    x = 99,306.10

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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.