Home / 125,899.40-188,849.10-112,121.30

Finding the Fourth Proportional to 125,899.40, 188,849.10 and 112,121.30

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Solution

The fourth proportional to 125,899.40, 188,849.10 and 112,121.30 is: 168,181.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,899.40 : 188,849.10 = 112,121.30 : x
  2. Step 2: Convert to fraction form
    125,899.40/188,849.10 = 112,121.30/x
  3. Step 3: Cross multiply
    125,899.40x = 188,849.10 × 112,121.30
  4. Step 4: Simplify right side
    125,899.40x = 21,174,006,595.83
  5. Step 5: Solve for x
    x = 21,174,006,595.83/125,899.40
  6. Step 6: Final answer
    x = 168,181.95

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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.