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Finding the Fourth Proportional to 125,772.74, 173,579.10 and 72,064.88

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Solution

The fourth proportional to 125,772.74, 173,579.10 and 72,064.88 is: 99,456.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,772.74 : 173,579.10 = 72,064.88 : x
  2. Step 2: Convert to fraction form
    125,772.74/173,579.10 = 72,064.88/x
  3. Step 3: Cross multiply
    125,772.74x = 173,579.10 × 72,064.88
  4. Step 4: Simplify right side
    125,772.74x = 12,508,957,012.01
  5. Step 5: Solve for x
    x = 12,508,957,012.01/125,772.74
  6. Step 6: Final answer
    x = 99,456.82

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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.