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Finding the Fourth Proportional to 172,432.80, 237,956.40 and 96,981.84

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Solution

The fourth proportional to 172,432.80, 237,956.40 and 96,981.84 is: 133,834.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,432.80 : 237,956.40 = 96,981.84 : x
  2. Step 2: Convert to fraction form
    172,432.80/237,956.40 = 96,981.84/x
  3. Step 3: Cross multiply
    172,432.80x = 237,956.40 × 96,981.84
  4. Step 4: Simplify right side
    172,432.80x = 23,077,449,511.78
  5. Step 5: Solve for x
    x = 23,077,449,511.78/172,432.80
  6. Step 6: Final answer
    x = 133,834.45

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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.