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Finding the Fourth Proportional to 172,809.47, 238,522.17 and 112,545.47

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Solution

The fourth proportional to 172,809.47, 238,522.17 and 112,545.47 is: 155,342.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,809.47 : 238,522.17 = 112,545.47 : x
  2. Step 2: Convert to fraction form
    172,809.47/238,522.17 = 112,545.47/x
  3. Step 3: Cross multiply
    172,809.47x = 238,522.17 × 112,545.47
  4. Step 4: Simplify right side
    172,809.47x = 26,844,588,535.46
  5. Step 5: Solve for x
    x = 26,844,588,535.46/172,809.47
  6. Step 6: Final answer
    x = 155,342.12

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1.5x scale

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.