Home / 138,726.46-191,442.86-75,064.92

Finding the Fourth Proportional to 138,726.46, 191,442.86 and 75,064.92

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Solution

The fourth proportional to 138,726.46, 191,442.86 and 75,064.92 is: 103,589.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,726.46 : 191,442.86 = 75,064.92 : x
  2. Step 2: Convert to fraction form
    138,726.46/191,442.86 = 75,064.92/x
  3. Step 3: Cross multiply
    138,726.46x = 191,442.86 × 75,064.92
  4. Step 4: Simplify right side
    138,726.46x = 14,370,642,970.47
  5. Step 5: Solve for x
    x = 14,370,642,970.47/138,726.46
  6. Step 6: Final answer
    x = 103,589.78

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1.5x scale

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.