Home / 117,321.55-161,891.60-72,001.44

Finding the Fourth Proportional to 117,321.55, 161,891.60 and 72,001.44

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Solution

The fourth proportional to 117,321.55, 161,891.60 and 72,001.44 is: 99,354.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,321.55 : 161,891.60 = 72,001.44 : x
  2. Step 2: Convert to fraction form
    117,321.55/161,891.60 = 72,001.44/x
  3. Step 3: Cross multiply
    117,321.55x = 161,891.60 × 72,001.44
  4. Step 4: Simplify right side
    117,321.55x = 11,656,427,963.90
  5. Step 5: Solve for x
    x = 11,656,427,963.90/117,321.55
  6. Step 6: Final answer
    x = 99,354.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.