Home / 127,279.60-175,565.16-78,199.72

Finding the Fourth Proportional to 127,279.60, 175,565.16 and 78,199.72

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Solution

The fourth proportional to 127,279.60, 175,565.16 and 78,199.72 is: 107,866.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,279.60 : 175,565.16 = 78,199.72 : x
  2. Step 2: Convert to fraction form
    127,279.60/175,565.16 = 78,199.72/x
  3. Step 3: Cross multiply
    127,279.60x = 175,565.16 × 78,199.72
  4. Step 4: Simplify right side
    127,279.60x = 13,729,146,353.76
  5. Step 5: Solve for x
    x = 13,729,146,353.76/127,279.60
  6. Step 6: Final answer
    x = 107,866.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.