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Finding the Fourth Proportional to 142,658.96, 213,861.54 and 67,732.88

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Solution

The fourth proportional to 142,658.96, 213,861.54 and 67,732.88 is: 101,539.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,658.96 : 213,861.54 = 67,732.88 : x
  2. Step 2: Convert to fraction form
    142,658.96/213,861.54 = 67,732.88/x
  3. Step 3: Cross multiply
    142,658.96x = 213,861.54 × 67,732.88
  4. Step 4: Simplify right side
    142,658.96x = 14,485,458,025.44
  5. Step 5: Solve for x
    x = 14,485,458,025.44/142,658.96
  6. Step 6: Final answer
    x = 101,539.07

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1.5x scale

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.