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Finding the Fourth Proportional to 172,124.44, 258,287.70 and 72,276.95

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Solution

The fourth proportional to 172,124.44, 258,287.70 and 72,276.95 is: 108,457.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,124.44 : 258,287.70 = 72,276.95 : x
  2. Step 2: Convert to fraction form
    172,124.44/258,287.70 = 72,276.95/x
  3. Step 3: Cross multiply
    172,124.44x = 258,287.70 × 72,276.95
  4. Step 4: Simplify right side
    172,124.44x = 18,668,247,178.52
  5. Step 5: Solve for x
    x = 18,668,247,178.52/172,124.44
  6. Step 6: Final answer
    x = 108,457.85

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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.