Home / 121,318.40-167,412.48-66,859.76

Finding the Fourth Proportional to 121,318.40, 167,412.48 and 66,859.76

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Solution

The fourth proportional to 121,318.40, 167,412.48 and 66,859.76 is: 92,262.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,318.40 : 167,412.48 = 66,859.76 : x
  2. Step 2: Convert to fraction form
    121,318.40/167,412.48 = 66,859.76/x
  3. Step 3: Cross multiply
    121,318.40x = 167,412.48 × 66,859.76
  4. Step 4: Simplify right side
    121,318.40x = 11,193,158,233.80
  5. Step 5: Solve for x
    x = 11,193,158,233.80/121,318.40
  6. Step 6: Final answer
    x = 92,262.66

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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.