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Finding the Fourth Proportional to 125,893.71, 173,756.61 and 72,179.10

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Solution

The fourth proportional to 125,893.71, 173,756.61 and 72,179.10 is: 99,620.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,893.71 : 173,756.61 = 72,179.10 : x
  2. Step 2: Convert to fraction form
    125,893.71/173,756.61 = 72,179.10/x
  3. Step 3: Cross multiply
    125,893.71x = 173,756.61 × 72,179.10
  4. Step 4: Simplify right side
    125,893.71x = 12,541,595,728.85
  5. Step 5: Solve for x
    x = 12,541,595,728.85/125,893.71
  6. Step 6: Final answer
    x = 99,620.51

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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.