Home / 137,287.59-189,447.96-76,857.72

Finding the Fourth Proportional to 137,287.59, 189,447.96 and 76,857.72

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Solution

The fourth proportional to 137,287.59, 189,447.96 and 76,857.72 is: 106,058.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,287.59 : 189,447.96 = 76,857.72 : x
  2. Step 2: Convert to fraction form
    137,287.59/189,447.96 = 76,857.72/x
  3. Step 3: Cross multiply
    137,287.59x = 189,447.96 × 76,857.72
  4. Step 4: Simplify right side
    137,287.59x = 14,560,538,264.25
  5. Step 5: Solve for x
    x = 14,560,538,264.25/137,287.59
  6. Step 6: Final answer
    x = 106,058.66

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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.