Home / 121,108.74-167,131.58-66,667.20

Finding the Fourth Proportional to 121,108.74, 167,131.58 and 66,667.20

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Solution

The fourth proportional to 121,108.74, 167,131.58 and 66,667.20 is: 92,001.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,108.74 : 167,131.58 = 66,667.20 : x
  2. Step 2: Convert to fraction form
    121,108.74/167,131.58 = 66,667.20/x
  3. Step 3: Cross multiply
    121,108.74x = 167,131.58 × 66,667.20
  4. Step 4: Simplify right side
    121,108.74x = 11,142,194,470.18
  5. Step 5: Solve for x
    x = 11,142,194,470.18/121,108.74
  6. Step 6: Final answer
    x = 92,001.57

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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.