Home / 127,627.20-191,462.40-68,446.80

Finding the Fourth Proportional to 127,627.20, 191,462.40 and 68,446.80

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Solution

The fourth proportional to 127,627.20, 191,462.40 and 68,446.80 is: 102,681.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,627.20 : 191,462.40 = 68,446.80 : x
  2. Step 2: Convert to fraction form
    127,627.20/191,462.40 = 68,446.80/x
  3. Step 3: Cross multiply
    127,627.20x = 191,462.40 × 68,446.80
  4. Step 4: Simplify right side
    127,627.20x = 13,104,988,600.32
  5. Step 5: Solve for x
    x = 13,104,988,600.32/127,627.20
  6. Step 6: Final answer
    x = 102,681.78

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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.