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Finding the Fourth Proportional to 99,842.60, 137,704.91 and 64,035.34

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Solution

The fourth proportional to 99,842.60, 137,704.91 and 64,035.34 is: 88,318.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,842.60 : 137,704.91 = 64,035.34 : x
  2. Step 2: Convert to fraction form
    99,842.60/137,704.91 = 64,035.34/x
  3. Step 3: Cross multiply
    99,842.60x = 137,704.91 × 64,035.34
  4. Step 4: Simplify right side
    99,842.60x = 8,817,980,067.08
  5. Step 5: Solve for x
    x = 8,817,980,067.08/99,842.60
  6. Step 6: Final answer
    x = 88,318.81

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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.