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Finding the Fourth Proportional to 168,707.80, 232,665.87 and 139,981.90

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Solution

The fourth proportional to 168,707.80, 232,665.87 and 139,981.90 is: 193,049.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,707.80 : 232,665.87 = 139,981.90 : x
  2. Step 2: Convert to fraction form
    168,707.80/232,665.87 = 139,981.90/x
  3. Step 3: Cross multiply
    168,707.80x = 232,665.87 × 139,981.90
  4. Step 4: Simplify right side
    168,707.80x = 32,569,010,371.32
  5. Step 5: Solve for x
    x = 32,569,010,371.32/168,707.80
  6. Step 6: Final answer
    x = 193,049.82

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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.