Home / 117,145.20-161,656.92-66,160.02

Finding the Fourth Proportional to 117,145.20, 161,656.92 and 66,160.02

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Solution

The fourth proportional to 117,145.20, 161,656.92 and 66,160.02 is: 91,298.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,145.20 : 161,656.92 = 66,160.02 : x
  2. Step 2: Convert to fraction form
    117,145.20/161,656.92 = 66,160.02/x
  3. Step 3: Cross multiply
    117,145.20x = 161,656.92 × 66,160.02
  4. Step 4: Simplify right side
    117,145.20x = 10,695,225,060.34
  5. Step 5: Solve for x
    x = 10,695,225,060.34/117,145.20
  6. Step 6: Final answer
    x = 91,298.88

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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.