Home / 120,542.16-180,771.28-49,444.60

Finding the Fourth Proportional to 120,542.16, 180,771.28 and 49,444.60

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Solution

The fourth proportional to 120,542.16, 180,771.28 and 49,444.60 is: 74,149.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,542.16 : 180,771.28 = 49,444.60 : x
  2. Step 2: Convert to fraction form
    120,542.16/180,771.28 = 49,444.60/x
  3. Step 3: Cross multiply
    120,542.16x = 180,771.28 × 49,444.60
  4. Step 4: Simplify right side
    120,542.16x = 8,938,163,631.09
  5. Step 5: Solve for x
    x = 8,938,163,631.09/120,542.16
  6. Step 6: Final answer
    x = 74,149.69

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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.