Home / 120,353.25-180,534.06-57,140.85

Finding the Fourth Proportional to 120,353.25, 180,534.06 and 57,140.85

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Solution

The fourth proportional to 120,353.25, 180,534.06 and 57,140.85 is: 85,713.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,353.25 : 180,534.06 = 57,140.85 : x
  2. Step 2: Convert to fraction form
    120,353.25/180,534.06 = 57,140.85/x
  3. Step 3: Cross multiply
    120,353.25x = 180,534.06 × 57,140.85
  4. Step 4: Simplify right side
    120,353.25x = 10,315,869,642.35
  5. Step 5: Solve for x
    x = 10,315,869,642.35/120,353.25
  6. Step 6: Final answer
    x = 85,713.26

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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.