Home / 87,082.09-119,390.56-85,507.45

Finding the Fourth Proportional to 87,082.09, 119,390.56 and 85,507.45

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Solution

The fourth proportional to 87,082.09, 119,390.56 and 85,507.45 is: 117,231.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,082.09 : 119,390.56 = 85,507.45 : x
  2. Step 2: Convert to fraction form
    87,082.09/119,390.56 = 85,507.45/x
  3. Step 3: Cross multiply
    87,082.09x = 119,390.56 × 85,507.45
  4. Step 4: Simplify right side
    87,082.09x = 10,208,781,827.43
  5. Step 5: Solve for x
    x = 10,208,781,827.43/87,082.09
  6. Step 6: Final answer
    x = 117,231.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.