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Finding the Fourth Proportional to 158,175, 218,279.52 and 86,553.96

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Solution

The fourth proportional to 158,175, 218,279.52 and 86,553.96 is: 119,443.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,175 : 218,279.52 = 86,553.96 : x
  2. Step 2: Convert to fraction form
    158,175/218,279.52 = 86,553.96/x
  3. Step 3: Cross multiply
    158,175x = 218,279.52 × 86,553.96
  4. Step 4: Simplify right side
    158,175x = 18,892,956,842.90
  5. Step 5: Solve for x
    x = 18,892,956,842.90/158,175
  6. Step 6: Final answer
    x = 119,443.38

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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.