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Finding the Fourth Proportional to 179,109.84, 268,443.32 and 90,388.71

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Solution

The fourth proportional to 179,109.84, 268,443.32 and 90,388.71 is: 135,471.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,109.84 : 268,443.32 = 90,388.71 : x
  2. Step 2: Convert to fraction form
    179,109.84/268,443.32 = 90,388.71/x
  3. Step 3: Cross multiply
    179,109.84x = 268,443.32 × 90,388.71
  4. Step 4: Simplify right side
    179,109.84x = 24,264,244,950.97
  5. Step 5: Solve for x
    x = 24,264,244,950.97/179,109.84
  6. Step 6: Final answer
    x = 135,471.31

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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.