Home / 120,827.88-181,274.49-85,988.70

Finding the Fourth Proportional to 120,827.88, 181,274.49 and 85,988.70

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Solution

The fourth proportional to 120,827.88, 181,274.49 and 85,988.70 is: 129,006.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,827.88 : 181,274.49 = 85,988.70 : x
  2. Step 2: Convert to fraction form
    120,827.88/181,274.49 = 85,988.70/x
  3. Step 3: Cross multiply
    120,827.88x = 181,274.49 × 85,988.70
  4. Step 4: Simplify right side
    120,827.88x = 15,587,557,738.26
  5. Step 5: Solve for x
    x = 15,587,557,738.26/120,827.88
  6. Step 6: Final answer
    x = 129,006.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.