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Finding the Fourth Proportional to 131,229.60, 181,096.80 and 71,613.60

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Solution

The fourth proportional to 131,229.60, 181,096.80 and 71,613.60 is: 98,826.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,229.60 : 181,096.80 = 71,613.60 : x
  2. Step 2: Convert to fraction form
    131,229.60/181,096.80 = 71,613.60/x
  3. Step 3: Cross multiply
    131,229.60x = 181,096.80 × 71,613.60
  4. Step 4: Simplify right side
    131,229.60x = 12,968,993,796.48
  5. Step 5: Solve for x
    x = 12,968,993,796.48/131,229.60
  6. Step 6: Final answer
    x = 98,826.74

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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.