Home / 121,003.32-166,988.62-66,557.79

Finding the Fourth Proportional to 121,003.32, 166,988.62 and 66,557.79

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Solution

The fourth proportional to 121,003.32, 166,988.62 and 66,557.79 is: 91,851.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,003.32 : 166,988.62 = 66,557.79 : x
  2. Step 2: Convert to fraction form
    121,003.32/166,988.62 = 66,557.79/x
  3. Step 3: Cross multiply
    121,003.32x = 166,988.62 × 66,557.79
  4. Step 4: Simplify right side
    121,003.32x = 11,114,393,502.35
  5. Step 5: Solve for x
    x = 11,114,393,502.35/121,003.32
  6. Step 6: Final answer
    x = 91,851.97

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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.