Home / 115,269.31-172,981.68-40,390.14

Finding the Fourth Proportional to 115,269.31, 172,981.68 and 40,390.14

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Solution

The fourth proportional to 115,269.31, 172,981.68 and 40,390.14 is: 60,612.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,269.31 : 172,981.68 = 40,390.14 : x
  2. Step 2: Convert to fraction form
    115,269.31/172,981.68 = 40,390.14/x
  3. Step 3: Cross multiply
    115,269.31x = 172,981.68 × 40,390.14
  4. Step 4: Simplify right side
    115,269.31x = 6,986,754,769.85
  5. Step 5: Solve for x
    x = 6,986,754,769.85/115,269.31
  6. Step 6: Final answer
    x = 60,612.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.