Home / 117,057.20-161,538.21-66,070.53

Finding the Fourth Proportional to 117,057.20, 161,538.21 and 66,070.53

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Solution

The fourth proportional to 117,057.20, 161,538.21 and 66,070.53 is: 91,176.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,057.20 : 161,538.21 = 66,070.53 : x
  2. Step 2: Convert to fraction form
    117,057.20/161,538.21 = 66,070.53/x
  3. Step 3: Cross multiply
    117,057.20x = 161,538.21 × 66,070.53
  4. Step 4: Simplify right side
    117,057.20x = 10,672,915,149.95
  5. Step 5: Solve for x
    x = 10,672,915,149.95/117,057.20
  6. Step 6: Final answer
    x = 91,176.93

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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.