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Finding the Fourth Proportional to 151,815.48, 209,489.44 and 88,140.84

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Solution

The fourth proportional to 151,815.48, 209,489.44 and 88,140.84 is: 121,625.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,815.48 : 209,489.44 = 88,140.84 : x
  2. Step 2: Convert to fraction form
    151,815.48/209,489.44 = 88,140.84/x
  3. Step 3: Cross multiply
    151,815.48x = 209,489.44 × 88,140.84
  4. Step 4: Simplify right side
    151,815.48x = 18,464,575,212.73
  5. Step 5: Solve for x
    x = 18,464,575,212.73/151,815.48
  6. Step 6: Final answer
    x = 121,625.11

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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.