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Finding the Fourth Proportional to 172,979.12, 238,711.08 and 93,491.12

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Solution

The fourth proportional to 172,979.12, 238,711.08 and 93,491.12 is: 129,017.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,979.12 : 238,711.08 = 93,491.12 : x
  2. Step 2: Convert to fraction form
    172,979.12/238,711.08 = 93,491.12/x
  3. Step 3: Cross multiply
    172,979.12x = 238,711.08 × 93,491.12
  4. Step 4: Simplify right side
    172,979.12x = 22,317,366,225.61
  5. Step 5: Solve for x
    x = 22,317,366,225.61/172,979.12
  6. Step 6: Final answer
    x = 129,017.69

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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.