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Finding the Fourth Proportional to 122,374.80, 168,868.80 and 68,655.60

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Solution

The fourth proportional to 122,374.80, 168,868.80 and 68,655.60 is: 94,740.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,374.80 : 168,868.80 = 68,655.60 : x
  2. Step 2: Convert to fraction form
    122,374.80/168,868.80 = 68,655.60/x
  3. Step 3: Cross multiply
    122,374.80x = 168,868.80 × 68,655.60
  4. Step 4: Simplify right side
    122,374.80x = 11,593,788,785.28
  5. Step 5: Solve for x
    x = 11,593,788,785.28/122,374.80
  6. Step 6: Final answer
    x = 94,740.00

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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.