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Finding the Fourth Proportional to 122,976.75, 169,678.76 and 69,251.07

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Solution

The fourth proportional to 122,976.75, 169,678.76 and 69,251.07 is: 95,550.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,976.75 : 169,678.76 = 69,251.07 : x
  2. Step 2: Convert to fraction form
    122,976.75/169,678.76 = 69,251.07/x
  3. Step 3: Cross multiply
    122,976.75x = 169,678.76 × 69,251.07
  4. Step 4: Simplify right side
    122,976.75x = 11,750,435,340.02
  5. Step 5: Solve for x
    x = 11,750,435,340.02/122,976.75
  6. Step 6: Final answer
    x = 95,550.06

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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.