Home / 120,288.24-180,432.45-75,982.32

Finding the Fourth Proportional to 120,288.24, 180,432.45 and 75,982.32

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Solution

The fourth proportional to 120,288.24, 180,432.45 and 75,982.32 is: 113,973.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,288.24 : 180,432.45 = 75,982.32 : x
  2. Step 2: Convert to fraction form
    120,288.24/180,432.45 = 75,982.32/x
  3. Step 3: Cross multiply
    120,288.24x = 180,432.45 × 75,982.32
  4. Step 4: Simplify right side
    120,288.24x = 13,709,676,154.28
  5. Step 5: Solve for x
    x = 13,709,676,154.28/120,288.24
  6. Step 6: Final answer
    x = 113,973.54

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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.