Home / 137,588.15-189,791.00-86,519.87

Finding the Fourth Proportional to 137,588.15, 189,791.00 and 86,519.87

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Solution

The fourth proportional to 137,588.15, 189,791.00 and 86,519.87 is: 119,346.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,588.15 : 189,791.00 = 86,519.87 : x
  2. Step 2: Convert to fraction form
    137,588.15/189,791.00 = 86,519.87/x
  3. Step 3: Cross multiply
    137,588.15x = 189,791.00 × 86,519.87
  4. Step 4: Simplify right side
    137,588.15x = 16,420,692,214.57
  5. Step 5: Solve for x
    x = 16,420,692,214.57/137,588.15
  6. Step 6: Final answer
    x = 119,346.70

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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.