Home / 137,517,275.41-189,823,202.66-81,762,562.79

Finding the Fourth Proportional to 137,517,275.41, 189,823,202.66 and 81,762,562.79

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Solution

The fourth proportional to 137,517,275.41, 189,823,202.66 and 81,762,562.79 is: 112,861,685.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,517,275.41 : 189,823,202.66 = 81,762,562.79 : x
  2. Step 2: Convert to fraction form
    137,517,275.41/189,823,202.66 = 81,762,562.79/x
  3. Step 3: Cross multiply
    137,517,275.41x = 189,823,202.66 × 81,762,562.79
  4. Step 4: Simplify right side
    137,517,275.41x = 15,520,431,526,078,334
  5. Step 5: Solve for x
    x = 15,520,431,526,078,334/137,517,275.41
  6. Step 6: Final answer
    x = 112,861,685.78

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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.