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Finding the Fourth Proportional to 123,861.60, 170,926.20 and 67,271.76

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Solution

The fourth proportional to 123,861.60, 170,926.20 and 67,271.76 is: 92,833.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,861.60 : 170,926.20 = 67,271.76 : x
  2. Step 2: Convert to fraction form
    123,861.60/170,926.20 = 67,271.76/x
  3. Step 3: Cross multiply
    123,861.60x = 170,926.20 × 67,271.76
  4. Step 4: Simplify right side
    123,861.60x = 11,498,506,304.11
  5. Step 5: Solve for x
    x = 11,498,506,304.11/123,861.60
  6. Step 6: Final answer
    x = 92,833.50

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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.