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Finding the Fourth Proportional to 169,528.51, 254,340.87 and 138,234.55

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Solution

The fourth proportional to 169,528.51, 254,340.87 and 138,234.55 is: 207,391.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,528.51 : 254,340.87 = 138,234.55 : x
  2. Step 2: Convert to fraction form
    169,528.51/254,340.87 = 138,234.55/x
  3. Step 3: Cross multiply
    169,528.51x = 254,340.87 × 138,234.55
  4. Step 4: Simplify right side
    169,528.51x = 35,158,695,711.06
  5. Step 5: Solve for x
    x = 35,158,695,711.06/169,528.51
  6. Step 6: Final answer
    x = 207,391.05

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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.