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Finding the Fourth Proportional to 121,430.70, 167,575.11 and 67,719.13

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Solution

The fourth proportional to 121,430.70, 167,575.11 and 67,719.13 is: 93,452.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,430.70 : 167,575.11 = 67,719.13 : x
  2. Step 2: Convert to fraction form
    121,430.70/167,575.11 = 67,719.13/x
  3. Step 3: Cross multiply
    121,430.70x = 167,575.11 × 67,719.13
  4. Step 4: Simplify right side
    121,430.70x = 11,348,040,658.85
  5. Step 5: Solve for x
    x = 11,348,040,658.85/121,430.70
  6. Step 6: Final answer
    x = 93,452.81

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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.