Home / 121,156.96-167,195.28-66,708.64

Finding the Fourth Proportional to 121,156.96, 167,195.28 and 66,708.64

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Solution

The fourth proportional to 121,156.96, 167,195.28 and 66,708.64 is: 92,057.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,156.96 : 167,195.28 = 66,708.64 : x
  2. Step 2: Convert to fraction form
    121,156.96/167,195.28 = 66,708.64/x
  3. Step 3: Cross multiply
    121,156.96x = 167,195.28 × 66,708.64
  4. Step 4: Simplify right side
    121,156.96x = 11,153,369,743.22
  5. Step 5: Solve for x
    x = 11,153,369,743.22/121,156.96
  6. Step 6: Final answer
    x = 92,057.19

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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.