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Finding the Fourth Proportional to 159,253.13, 219,778.41 and 91,281.42

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Solution

The fourth proportional to 159,253.13, 219,778.41 and 91,281.42 is: 125,973.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,253.13 : 219,778.41 = 91,281.42 : x
  2. Step 2: Convert to fraction form
    159,253.13/219,778.41 = 91,281.42/x
  3. Step 3: Cross multiply
    159,253.13x = 219,778.41 × 91,281.42
  4. Step 4: Simplify right side
    159,253.13x = 20,061,685,832.01
  5. Step 5: Solve for x
    x = 20,061,685,832.01/159,253.13
  6. Step 6: Final answer
    x = 125,973.58

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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.