Home / 125,838-188,786.20-42,732.08

Finding the Fourth Proportional to 125,838, 188,786.20 and 42,732.08

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Solution

The fourth proportional to 125,838, 188,786.20 and 42,732.08 is: 64,108.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,838 : 188,786.20 = 42,732.08 : x
  2. Step 2: Convert to fraction form
    125,838/188,786.20 = 42,732.08/x
  3. Step 3: Cross multiply
    125,838x = 188,786.20 × 42,732.08
  4. Step 4: Simplify right side
    125,838x = 8,067,227,001.30
  5. Step 5: Solve for x
    x = 8,067,227,001.30/125,838
  6. Step 6: Final answer
    x = 64,108.04

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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.