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Finding the Fourth Proportional to 115,635.98, 159,585.72 and 64,658.64

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Solution

The fourth proportional to 115,635.98, 159,585.72 and 64,658.64 is: 89,233.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,635.98 : 159,585.72 = 64,658.64 : x
  2. Step 2: Convert to fraction form
    115,635.98/159,585.72 = 64,658.64/x
  3. Step 3: Cross multiply
    115,635.98x = 159,585.72 × 64,658.64
  4. Step 4: Simplify right side
    115,635.98x = 10,318,595,618.62
  5. Step 5: Solve for x
    x = 10,318,595,618.62/115,635.98
  6. Step 6: Final answer
    x = 89,233.43

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1.5x scale

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.