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Finding the Fourth Proportional to 122,585.60, 169,157.76 and 68,866.40

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Solution

The fourth proportional to 122,585.60, 169,157.76 and 68,866.40 is: 95,029.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,585.60 : 169,157.76 = 68,866.40 : x
  2. Step 2: Convert to fraction form
    122,585.60/169,157.76 = 68,866.40/x
  3. Step 3: Cross multiply
    122,585.60x = 169,157.76 × 68,866.40
  4. Step 4: Simplify right side
    122,585.60x = 11,649,285,963.26
  5. Step 5: Solve for x
    x = 11,649,285,963.26/122,585.60
  6. Step 6: Final answer
    x = 95,029.81

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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.