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Finding the Fourth Proportional to 161,290.65, 222,585.91 and 88,689.77

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Solution

The fourth proportional to 161,290.65, 222,585.91 and 88,689.77 is: 122,394.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,290.65 : 222,585.91 = 88,689.77 : x
  2. Step 2: Convert to fraction form
    161,290.65/222,585.91 = 88,689.77/x
  3. Step 3: Cross multiply
    161,290.65x = 222,585.91 × 88,689.77
  4. Step 4: Simplify right side
    161,290.65x = 19,741,091,828.49
  5. Step 5: Solve for x
    x = 19,741,091,828.49/161,290.65
  6. Step 6: Final answer
    x = 122,394.52

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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.