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Finding the Fourth Proportional to 121,807.60, 182,905.80 and 88,759.60

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Solution

The fourth proportional to 121,807.60, 182,905.80 and 88,759.60 is: 133,281.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,807.60 : 182,905.80 = 88,759.60 : x
  2. Step 2: Convert to fraction form
    121,807.60/182,905.80 = 88,759.60/x
  3. Step 3: Cross multiply
    121,807.60x = 182,905.80 × 88,759.60
  4. Step 4: Simplify right side
    121,807.60x = 16,234,645,645.68
  5. Step 5: Solve for x
    x = 16,234,645,645.68/121,807.60
  6. Step 6: Final answer
    x = 133,281.06

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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.