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Finding the Fourth Proportional to 143,929.30, 215,829.15 and 65,002.90

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Solution

The fourth proportional to 143,929.30, 215,829.15 and 65,002.90 is: 97,475.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,929.30 : 215,829.15 = 65,002.90 : x
  2. Step 2: Convert to fraction form
    143,929.30/215,829.15 = 65,002.90/x
  3. Step 3: Cross multiply
    143,929.30x = 215,829.15 × 65,002.90
  4. Step 4: Simplify right side
    143,929.30x = 14,029,520,654.54
  5. Step 5: Solve for x
    x = 14,029,520,654.54/143,929.30
  6. Step 6: Final answer
    x = 97,475.08

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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.