Home / 120,381.12-180,567.60-57,231.52

Finding the Fourth Proportional to 120,381.12, 180,567.60 and 57,231.52

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Solution

The fourth proportional to 120,381.12, 180,567.60 and 57,231.52 is: 85,845.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,381.12 : 180,567.60 = 57,231.52 : x
  2. Step 2: Convert to fraction form
    120,381.12/180,567.60 = 57,231.52/x
  3. Step 3: Cross multiply
    120,381.12x = 180,567.60 × 57,231.52
  4. Step 4: Simplify right side
    120,381.12x = 10,334,158,210.75
  5. Step 5: Solve for x
    x = 10,334,158,210.75/120,381.12
  6. Step 6: Final answer
    x = 85,845.34

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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.