Home / 121,146.26-167,110.98-78,733.04

Finding the Fourth Proportional to 121,146.26, 167,110.98 and 78,733.04

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Solution

The fourth proportional to 121,146.26, 167,110.98 and 78,733.04 is: 108,605.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,146.26 : 167,110.98 = 78,733.04 : x
  2. Step 2: Convert to fraction form
    121,146.26/167,110.98 = 78,733.04/x
  3. Step 3: Cross multiply
    121,146.26x = 167,110.98 × 78,733.04
  4. Step 4: Simplify right side
    121,146.26x = 13,157,155,472.78
  5. Step 5: Solve for x
    x = 13,157,155,472.78/121,146.26
  6. Step 6: Final answer
    x = 108,605.54

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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.