Home / 120,092.30-180,138.45-31,345.04

Finding the Fourth Proportional to 120,092.30, 180,138.45 and 31,345.04

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Solution

The fourth proportional to 120,092.30, 180,138.45 and 31,345.04 is: 47,017.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,092.30 : 180,138.45 = 31,345.04 : x
  2. Step 2: Convert to fraction form
    120,092.30/180,138.45 = 31,345.04/x
  3. Step 3: Cross multiply
    120,092.30x = 180,138.45 × 31,345.04
  4. Step 4: Simplify right side
    120,092.30x = 5,646,446,020.10
  5. Step 5: Solve for x
    x = 5,646,446,020.10/120,092.30
  6. Step 6: Final answer
    x = 47,017.55

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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.