Home / 138,726,742.68-191,442,876.30-76,005,065.61

Finding the Fourth Proportional to 138,726,742.68, 191,442,876.30 and 76,005,065.61

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Solution

The fourth proportional to 138,726,742.68, 191,442,876.30 and 76,005,065.61 is: 104,886,974.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,726,742.68 : 191,442,876.30 = 76,005,065.61 : x
  2. Step 2: Convert to fraction form
    138,726,742.68/191,442,876.30 = 76,005,065.61/x
  3. Step 3: Cross multiply
    138,726,742.68x = 191,442,876.30 × 76,005,065.61
  4. Step 4: Simplify right side
    138,726,742.68x = 14,550,628,373,748,614
  5. Step 5: Solve for x
    x = 14,550,628,373,748,614/138,726,742.68
  6. Step 6: Final answer
    x = 104,886,974.87

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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.