Home / 138,642,099.66-191,332,074.78-76,762,436.40

Finding the Fourth Proportional to 138,642,099.66, 191,332,074.78 and 76,762,436.40

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Solution

The fourth proportional to 138,642,099.66, 191,332,074.78 and 76,762,436.40 is: 105,935,471.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,642,099.66 : 191,332,074.78 = 76,762,436.40 : x
  2. Step 2: Convert to fraction form
    138,642,099.66/191,332,074.78 = 76,762,436.40/x
  3. Step 3: Cross multiply
    138,642,099.66x = 191,332,074.78 × 76,762,436.40
  4. Step 4: Simplify right side
    138,642,099.66x = 14,687,116,221,579,796
  5. Step 5: Solve for x
    x = 14,687,116,221,579,796/138,642,099.66
  6. Step 6: Final answer
    x = 105,935,471.68

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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.