Home / 117,142.20-161,652.78-66,157.02

Finding the Fourth Proportional to 117,142.20, 161,652.78 and 66,157.02

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Solution

The fourth proportional to 117,142.20, 161,652.78 and 66,157.02 is: 91,294.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,142.20 : 161,652.78 = 66,157.02 : x
  2. Step 2: Convert to fraction form
    117,142.20/161,652.78 = 66,157.02/x
  3. Step 3: Cross multiply
    117,142.20x = 161,652.78 × 66,157.02
  4. Step 4: Simplify right side
    117,142.20x = 10,694,466,199.52
  5. Step 5: Solve for x
    x = 10,694,466,199.52/117,142.20
  6. Step 6: Final answer
    x = 91,294.74

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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.