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Finding the Fourth Proportional to 148,719.68, 205,143 and 88,250.48

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Solution

The fourth proportional to 148,719.68, 205,143 and 88,250.48 is: 121,732.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,719.68 : 205,143 = 88,250.48 : x
  2. Step 2: Convert to fraction form
    148,719.68/205,143 = 88,250.48/x
  3. Step 3: Cross multiply
    148,719.68x = 205,143 × 88,250.48
  4. Step 4: Simplify right side
    148,719.68x = 18,103,968,218.64
  5. Step 5: Solve for x
    x = 18,103,968,218.64/148,719.68
  6. Step 6: Final answer
    x = 121,732.16

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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.