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Finding the Fourth Proportional to 101,613.80, 152,507.10 and 45,540.20

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Solution

The fourth proportional to 101,613.80, 152,507.10 and 45,540.20 is: 68,349.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,613.80 : 152,507.10 = 45,540.20 : x
  2. Step 2: Convert to fraction form
    101,613.80/152,507.10 = 45,540.20/x
  3. Step 3: Cross multiply
    101,613.80x = 152,507.10 × 45,540.20
  4. Step 4: Simplify right side
    101,613.80x = 6,945,203,835.42
  5. Step 5: Solve for x
    x = 6,945,203,835.42/101,613.80
  6. Step 6: Final answer
    x = 68,349.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.