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Finding the Fourth Proportional to 105,079.20, 157,618.80 and 92,613.30

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Solution

The fourth proportional to 105,079.20, 157,618.80 and 92,613.30 is: 138,919.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,079.20 : 157,618.80 = 92,613.30 : x
  2. Step 2: Convert to fraction form
    105,079.20/157,618.80 = 92,613.30/x
  3. Step 3: Cross multiply
    105,079.20x = 157,618.80 × 92,613.30
  4. Step 4: Simplify right side
    105,079.20x = 14,597,597,210.04
  5. Step 5: Solve for x
    x = 14,597,597,210.04/105,079.20
  6. Step 6: Final answer
    x = 138,919.95

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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.