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Finding the Fourth Proportional to 158,921.48, 219,300.81 and 87,304.52

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Solution

The fourth proportional to 158,921.48, 219,300.81 and 87,304.52 is: 120,474.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,921.48 : 219,300.81 = 87,304.52 : x
  2. Step 2: Convert to fraction form
    158,921.48/219,300.81 = 87,304.52/x
  3. Step 3: Cross multiply
    158,921.48x = 219,300.81 × 87,304.52
  4. Step 4: Simplify right side
    158,921.48x = 19,145,951,952.66
  5. Step 5: Solve for x
    x = 19,145,951,952.66/158,921.48
  6. Step 6: Final answer
    x = 120,474.29

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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.