Home / 137,588.28-189,791.39-86,520.15

Finding the Fourth Proportional to 137,588.28, 189,791.39 and 86,520.15

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Solution

The fourth proportional to 137,588.28, 189,791.39 and 86,520.15 is: 119,347.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,588.28 : 189,791.39 = 86,520.15 : x
  2. Step 2: Convert to fraction form
    137,588.28/189,791.39 = 86,520.15/x
  3. Step 3: Cross multiply
    137,588.28x = 189,791.39 × 86,520.15
  4. Step 4: Simplify right side
    137,588.28x = 16,420,779,098.91
  5. Step 5: Solve for x
    x = 16,420,779,098.91/137,588.28
  6. Step 6: Final answer
    x = 119,347.22

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1.5x scale

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.