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Finding the Fourth Proportional to 74,360.75, 102,819.65 and 73,158.91

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Solution

The fourth proportional to 74,360.75, 102,819.65 and 73,158.91 is: 101,157.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,360.75 : 102,819.65 = 73,158.91 : x
  2. Step 2: Convert to fraction form
    74,360.75/102,819.65 = 73,158.91/x
  3. Step 3: Cross multiply
    74,360.75x = 102,819.65 × 73,158.91
  4. Step 4: Simplify right side
    74,360.75x = 7,522,172,897.74
  5. Step 5: Solve for x
    x = 7,522,172,897.74/74,360.75
  6. Step 6: Final answer
    x = 101,157.85

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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.