Home / 100,287.38-138,104.93-93,876.63

Finding the Fourth Proportional to 100,287.38, 138,104.93 and 93,876.63

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Solution

The fourth proportional to 100,287.38, 138,104.93 and 93,876.63 is: 129,276.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,287.38 : 138,104.93 = 93,876.63 : x
  2. Step 2: Convert to fraction form
    100,287.38/138,104.93 = 93,876.63/x
  3. Step 3: Cross multiply
    100,287.38x = 138,104.93 × 93,876.63
  4. Step 4: Simplify right side
    100,287.38x = 12,964,824,945.40
  5. Step 5: Solve for x
    x = 12,964,824,945.40/100,287.38
  6. Step 6: Final answer
    x = 129,276.74

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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.