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Finding the Fourth Proportional to 169,871.60, 254,634.60 and 99,714.80

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Solution

The fourth proportional to 169,871.60, 254,634.60 and 99,714.80 is: 149,470.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,871.60 : 254,634.60 = 99,714.80 : x
  2. Step 2: Convert to fraction form
    169,871.60/254,634.60 = 99,714.80/x
  3. Step 3: Cross multiply
    169,871.60x = 254,634.60 × 99,714.80
  4. Step 4: Simplify right side
    169,871.60x = 25,390,838,212.08
  5. Step 5: Solve for x
    x = 25,390,838,212.08/169,871.60
  6. Step 6: Final answer
    x = 149,470.77

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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.