Home / 100,260.28-138,359.19-57,818.81

Finding the Fourth Proportional to 100,260.28, 138,359.19 and 57,818.81

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Solution

The fourth proportional to 100,260.28, 138,359.19 and 57,818.81 is: 79,789.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,260.28 : 138,359.19 = 57,818.81 : x
  2. Step 2: Convert to fraction form
    100,260.28/138,359.19 = 57,818.81/x
  3. Step 3: Cross multiply
    100,260.28x = 138,359.19 × 57,818.81
  4. Step 4: Simplify right side
    100,260.28x = 7,999,763,955.85
  5. Step 5: Solve for x
    x = 7,999,763,955.85/100,260.28
  6. Step 6: Final answer
    x = 79,789.96

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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.