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Finding the Fourth Proportional to 122,477.92, 169,022.40 and 68,766.88

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Solution

The fourth proportional to 122,477.92, 169,022.40 and 68,766.88 is: 94,899.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,477.92 : 169,022.40 = 68,766.88 : x
  2. Step 2: Convert to fraction form
    122,477.92/169,022.40 = 68,766.88/x
  3. Step 3: Cross multiply
    122,477.92x = 169,022.40 × 68,766.88
  4. Step 4: Simplify right side
    122,477.92x = 11,623,143,098.11
  5. Step 5: Solve for x
    x = 11,623,143,098.11/122,477.92
  6. Step 6: Final answer
    x = 94,899.91

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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.