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Finding the Fourth Proportional to 151,839.80, 209,564.56 and 88,214.50

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Solution

The fourth proportional to 151,839.80, 209,564.56 and 88,214.50 is: 121,750.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,839.80 : 209,564.56 = 88,214.50 : x
  2. Step 2: Convert to fraction form
    151,839.80/209,564.56 = 88,214.50/x
  3. Step 3: Cross multiply
    151,839.80x = 209,564.56 × 88,214.50
  4. Step 4: Simplify right side
    151,839.80x = 18,486,632,878.12
  5. Step 5: Solve for x
    x = 18,486,632,878.12/151,839.80
  6. Step 6: Final answer
    x = 121,750.90

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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.