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Finding the Fourth Proportional to 161,963.84, 223,508.60 and 89,367.40

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Solution

The fourth proportional to 161,963.84, 223,508.60 and 89,367.40 is: 123,326.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,963.84 : 223,508.60 = 89,367.40 : x
  2. Step 2: Convert to fraction form
    161,963.84/223,508.60 = 89,367.40/x
  3. Step 3: Cross multiply
    161,963.84x = 223,508.60 × 89,367.40
  4. Step 4: Simplify right side
    161,963.84x = 19,974,382,459.64
  5. Step 5: Solve for x
    x = 19,974,382,459.64/161,963.84
  6. Step 6: Final answer
    x = 123,326.18

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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.