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Finding the Fourth Proportional to 169,780.80, 254,503.20 and 75,062.40

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Solution

The fourth proportional to 169,780.80, 254,503.20 and 75,062.40 is: 112,519.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,780.80 : 254,503.20 = 75,062.40 : x
  2. Step 2: Convert to fraction form
    169,780.80/254,503.20 = 75,062.40/x
  3. Step 3: Cross multiply
    169,780.80x = 254,503.20 × 75,062.40
  4. Step 4: Simplify right side
    169,780.80x = 19,103,620,999.68
  5. Step 5: Solve for x
    x = 19,103,620,999.68/169,780.80
  6. Step 6: Final answer
    x = 112,519.32

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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.