Home / 138,516,297.28-191,158,116.96-76,635,628

Finding the Fourth Proportional to 138,516,297.28, 191,158,116.96 and 76,635,628

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Solution

The fourth proportional to 138,516,297.28, 191,158,116.96 and 76,635,628 is: 105,760,279.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,516,297.28 : 191,158,116.96 = 76,635,628 : x
  2. Step 2: Convert to fraction form
    138,516,297.28/191,158,116.96 = 76,635,628/x
  3. Step 3: Cross multiply
    138,516,297.28x = 191,158,116.96 × 76,635,628
  4. Step 4: Simplify right side
    138,516,297.28x = 14,649,522,340,527,052
  5. Step 5: Solve for x
    x = 14,649,522,340,527,052/138,516,297.28
  6. Step 6: Final answer
    x = 105,760,279.68

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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.