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Finding the Fourth Proportional to 159,189, 219,666.42 and 87,572.04

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Solution

The fourth proportional to 159,189, 219,666.42 and 87,572.04 is: 120,841.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,189 : 219,666.42 = 87,572.04 : x
  2. Step 2: Convert to fraction form
    159,189/219,666.42 = 87,572.04/x
  3. Step 3: Cross multiply
    159,189x = 219,666.42 × 87,572.04
  4. Step 4: Simplify right side
    159,189x = 19,236,636,518.90
  5. Step 5: Solve for x
    x = 19,236,636,518.90/159,189
  6. Step 6: Final answer
    x = 120,841.49

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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.