Home / 120,378.12-180,561.78-57,152.04

Finding the Fourth Proportional to 120,378.12, 180,561.78 and 57,152.04

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Solution

The fourth proportional to 120,378.12, 180,561.78 and 57,152.04 is: 85,725.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,378.12 : 180,561.78 = 57,152.04 : x
  2. Step 2: Convert to fraction form
    120,378.12/180,561.78 = 57,152.04/x
  3. Step 3: Cross multiply
    120,378.12x = 180,561.78 × 57,152.04
  4. Step 4: Simplify right side
    120,378.12x = 10,319,474,073.03
  5. Step 5: Solve for x
    x = 10,319,474,073.03/120,378.12
  6. Step 6: Final answer
    x = 85,725.50

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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.