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Finding the Fourth Proportional to 101,468.20, 140,009.76 and 63,715.72

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Solution

The fourth proportional to 101,468.20, 140,009.76 and 63,715.72 is: 87,917.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,468.20 : 140,009.76 = 63,715.72 : x
  2. Step 2: Convert to fraction form
    101,468.20/140,009.76 = 63,715.72/x
  3. Step 3: Cross multiply
    101,468.20x = 140,009.76 × 63,715.72
  4. Step 4: Simplify right side
    101,468.20x = 8,920,822,665.43
  5. Step 5: Solve for x
    x = 8,920,822,665.43/101,468.20
  6. Step 6: Final answer
    x = 87,917.42

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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.