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Finding the Fourth Proportional to 125,520, 173,232.96 and 72,528

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Solution

The fourth proportional to 125,520, 173,232.96 and 72,528 is: 100,097.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,520 : 173,232.96 = 72,528 : x
  2. Step 2: Convert to fraction form
    125,520/173,232.96 = 72,528/x
  3. Step 3: Cross multiply
    125,520x = 173,232.96 × 72,528
  4. Step 4: Simplify right side
    125,520x = 12,564,240,122.88
  5. Step 5: Solve for x
    x = 12,564,240,122.88/125,520
  6. Step 6: Final answer
    x = 100,097.52

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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.