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Finding the Fourth Proportional to 172,983.28, 259,394.28 and 89,854.96

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Solution

The fourth proportional to 172,983.28, 259,394.28 and 89,854.96 is: 134,740.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,983.28 : 259,394.28 = 89,854.96 : x
  2. Step 2: Convert to fraction form
    172,983.28/259,394.28 = 89,854.96/x
  3. Step 3: Cross multiply
    172,983.28x = 259,394.28 × 89,854.96
  4. Step 4: Simplify right side
    172,983.28x = 23,307,862,653.63
  5. Step 5: Solve for x
    x = 23,307,862,653.63/172,983.28
  6. Step 6: Final answer
    x = 134,740.55

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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.