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Finding the Fourth Proportional to 143,572.92, 215,368.10 and 43,740.42

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Solution

The fourth proportional to 143,572.92, 215,368.10 and 43,740.42 is: 65,613.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,572.92 : 215,368.10 = 43,740.42 : x
  2. Step 2: Convert to fraction form
    143,572.92/215,368.10 = 43,740.42/x
  3. Step 3: Cross multiply
    143,572.92x = 215,368.10 × 43,740.42
  4. Step 4: Simplify right side
    143,572.92x = 9,420,291,148.60
  5. Step 5: Solve for x
    x = 9,420,291,148.60/143,572.92
  6. Step 6: Final answer
    x = 65,613.29

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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.