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Finding the Fourth Proportional to 169,221.60, 253,659.60 and 99,064.80

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Solution

The fourth proportional to 169,221.60, 253,659.60 and 99,064.80 is: 148,496.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,221.60 : 253,659.60 = 99,064.80 : x
  2. Step 2: Convert to fraction form
    169,221.60/253,659.60 = 99,064.80/x
  3. Step 3: Cross multiply
    169,221.60x = 253,659.60 × 99,064.80
  4. Step 4: Simplify right side
    169,221.60x = 25,128,737,542.08
  5. Step 5: Solve for x
    x = 25,128,737,542.08/169,221.60
  6. Step 6: Final answer
    x = 148,496.04

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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.