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Finding the Fourth Proportional to 138,081.48, 206,818.56 and 114,117.48

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Solution

The fourth proportional to 138,081.48, 206,818.56 and 114,117.48 is: 170,925.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,081.48 : 206,818.56 = 114,117.48 : x
  2. Step 2: Convert to fraction form
    138,081.48/206,818.56 = 114,117.48/x
  3. Step 3: Cross multiply
    138,081.48x = 206,818.56 × 114,117.48
  4. Step 4: Simplify right side
    138,081.48x = 23,601,612,884.43
  5. Step 5: Solve for x
    x = 23,601,612,884.43/138,081.48
  6. Step 6: Final answer
    x = 170,925.26

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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.