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Finding the Fourth Proportional to 121,020.69, 167,013.16 and 67,309.59

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Solution

The fourth proportional to 121,020.69, 167,013.16 and 67,309.59 is: 92,889.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,020.69 : 167,013.16 = 67,309.59 : x
  2. Step 2: Convert to fraction form
    121,020.69/167,013.16 = 67,309.59/x
  3. Step 3: Cross multiply
    121,020.69x = 167,013.16 × 67,309.59
  4. Step 4: Simplify right side
    121,020.69x = 11,241,586,842.78
  5. Step 5: Solve for x
    x = 11,241,586,842.78/121,020.69
  6. Step 6: Final answer
    x = 92,889.79

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1.5x scale

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.