Home / 127,789.78-176,350.60-74,106.65

Finding the Fourth Proportional to 127,789.78, 176,350.60 and 74,106.65

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Solution

The fourth proportional to 127,789.78, 176,350.60 and 74,106.65 is: 102,267.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,789.78 : 176,350.60 = 74,106.65 : x
  2. Step 2: Convert to fraction form
    127,789.78/176,350.60 = 74,106.65/x
  3. Step 3: Cross multiply
    127,789.78x = 176,350.60 × 74,106.65
  4. Step 4: Simplify right side
    127,789.78x = 13,068,752,191.49
  5. Step 5: Solve for x
    x = 13,068,752,191.49/127,789.78
  6. Step 6: Final answer
    x = 102,267.59

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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.