Home / 120,402.45-180,589.35-31,662.90

Finding the Fourth Proportional to 120,402.45, 180,589.35 and 31,662.90

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Solution

The fourth proportional to 120,402.45, 180,589.35 and 31,662.90 is: 47,490.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,402.45 : 180,589.35 = 31,662.90 : x
  2. Step 2: Convert to fraction form
    120,402.45/180,589.35 = 31,662.90/x
  3. Step 3: Cross multiply
    120,402.45x = 180,589.35 × 31,662.90
  4. Step 4: Simplify right side
    120,402.45x = 5,717,982,470.75
  5. Step 5: Solve for x
    x = 5,717,982,470.75/120,402.45
  6. Step 6: Final answer
    x = 47,490.58

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1.5x scale

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.