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Finding the Fourth Proportional to 122,925.78, 169,640.78 and 69,212.76

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Solution

The fourth proportional to 122,925.78, 169,640.78 and 69,212.76 is: 95,515.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,925.78 : 169,640.78 = 69,212.76 : x
  2. Step 2: Convert to fraction form
    122,925.78/169,640.78 = 69,212.76/x
  3. Step 3: Cross multiply
    122,925.78x = 169,640.78 × 69,212.76
  4. Step 4: Simplify right side
    122,925.78x = 11,741,306,246.29
  5. Step 5: Solve for x
    x = 11,741,306,246.29/122,925.78
  6. Step 6: Final answer
    x = 95,515.41

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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.