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Finding the Fourth Proportional to 170,997.84, 235,919.25 and 99,318.92

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Solution

The fourth proportional to 170,997.84, 235,919.25 and 99,318.92 is: 137,026.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,997.84 : 235,919.25 = 99,318.92 : x
  2. Step 2: Convert to fraction form
    170,997.84/235,919.25 = 99,318.92/x
  3. Step 3: Cross multiply
    170,997.84x = 235,919.25 × 99,318.92
  4. Step 4: Simplify right side
    170,997.84x = 23,431,243,937.61
  5. Step 5: Solve for x
    x = 23,431,243,937.61/170,997.84
  6. Step 6: Final answer
    x = 137,026.55

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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.