Home / 125,239.80-187,416.24-77,877.20

Finding the Fourth Proportional to 125,239.80, 187,416.24 and 77,877.20

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Solution

The fourth proportional to 125,239.80, 187,416.24 and 77,877.20 is: 116,540.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,239.80 : 187,416.24 = 77,877.20 : x
  2. Step 2: Convert to fraction form
    125,239.80/187,416.24 = 77,877.20/x
  3. Step 3: Cross multiply
    125,239.80x = 187,416.24 × 77,877.20
  4. Step 4: Simplify right side
    125,239.80x = 14,595,452,005.73
  5. Step 5: Solve for x
    x = 14,595,452,005.73/125,239.80
  6. Step 6: Final answer
    x = 116,540.05

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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.