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Finding the Fourth Proportional to 117,613.80, 176,766.30 and 102,407.40

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Solution

The fourth proportional to 117,613.80, 176,766.30 and 102,407.40 is: 153,912.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,613.80 : 176,766.30 = 102,407.40 : x
  2. Step 2: Convert to fraction form
    117,613.80/176,766.30 = 102,407.40/x
  3. Step 3: Cross multiply
    117,613.80x = 176,766.30 × 102,407.40
  4. Step 4: Simplify right side
    117,613.80x = 18,102,177,190.62
  5. Step 5: Solve for x
    x = 18,102,177,190.62/117,613.80
  6. Step 6: Final answer
    x = 153,912.02

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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.