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Finding the Fourth Proportional to 121,364.40, 182,046.60 and 66,068.40

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Solution

The fourth proportional to 121,364.40, 182,046.60 and 66,068.40 is: 99,102.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,364.40 : 182,046.60 = 66,068.40 : x
  2. Step 2: Convert to fraction form
    121,364.40/182,046.60 = 66,068.40/x
  3. Step 3: Cross multiply
    121,364.40x = 182,046.60 × 66,068.40
  4. Step 4: Simplify right side
    121,364.40x = 12,027,527,587.44
  5. Step 5: Solve for x
    x = 12,027,527,587.44/121,364.40
  6. Step 6: Final answer
    x = 99,102.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.