Home / 185,789.40-278,522.10-126,432.60

Finding the Fourth Proportional to 185,789.40, 278,522.10 and 126,432.60

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Solution

The fourth proportional to 185,789.40, 278,522.10 and 126,432.60 is: 189,538.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,789.40 : 278,522.10 = 126,432.60 : x
  2. Step 2: Convert to fraction form
    185,789.40/278,522.10 = 126,432.60/x
  3. Step 3: Cross multiply
    185,789.40x = 278,522.10 × 126,432.60
  4. Step 4: Simplify right side
    185,789.40x = 35,214,273,260.46
  5. Step 5: Solve for x
    x = 35,214,273,260.46/185,789.40
  6. Step 6: Final answer
    x = 189,538.66

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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.