Home / 100,470.24-138,643.23-60,174.78

Finding the Fourth Proportional to 100,470.24, 138,643.23 and 60,174.78

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Solution

The fourth proportional to 100,470.24, 138,643.23 and 60,174.78 is: 83,037.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,470.24 : 138,643.23 = 60,174.78 : x
  2. Step 2: Convert to fraction form
    100,470.24/138,643.23 = 60,174.78/x
  3. Step 3: Cross multiply
    100,470.24x = 138,643.23 × 60,174.78
  4. Step 4: Simplify right side
    100,470.24x = 8,342,825,863.74
  5. Step 5: Solve for x
    x = 8,342,825,863.74/100,470.24
  6. Step 6: Final answer
    x = 83,037.78

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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.