Home / 120,376.12-180,558.78-57,150.04

Finding the Fourth Proportional to 120,376.12, 180,558.78 and 57,150.04

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Solution

The fourth proportional to 120,376.12, 180,558.78 and 57,150.04 is: 85,722.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,376.12 : 180,558.78 = 57,150.04 : x
  2. Step 2: Convert to fraction form
    120,376.12/180,558.78 = 57,150.04/x
  3. Step 3: Cross multiply
    120,376.12x = 180,558.78 × 57,150.04
  4. Step 4: Simplify right side
    120,376.12x = 10,318,941,499.35
  5. Step 5: Solve for x
    x = 10,318,941,499.35/120,376.12
  6. Step 6: Final answer
    x = 85,722.50

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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.