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Finding the Fourth Proportional to 162,540.92, 243,589.93 and 78,294.95

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Solution

The fourth proportional to 162,540.92, 243,589.93 and 78,294.95 is: 117,335.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,540.92 : 243,589.93 = 78,294.95 : x
  2. Step 2: Convert to fraction form
    162,540.92/243,589.93 = 78,294.95/x
  3. Step 3: Cross multiply
    162,540.92x = 243,589.93 × 78,294.95
  4. Step 4: Simplify right side
    162,540.92x = 19,071,861,389.85
  5. Step 5: Solve for x
    x = 19,071,861,389.85/162,540.92
  6. Step 6: Final answer
    x = 117,335.75

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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.