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Finding the Fourth Proportional to 159,436.49, 220,019.72 and 87,823.17

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Solution

The fourth proportional to 159,436.49, 220,019.72 and 87,823.17 is: 121,194.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,436.49 : 220,019.72 = 87,823.17 : x
  2. Step 2: Convert to fraction form
    159,436.49/220,019.72 = 87,823.17/x
  3. Step 3: Cross multiply
    159,436.49x = 220,019.72 × 87,823.17
  4. Step 4: Simplify right side
    159,436.49x = 19,322,828,833.80
  5. Step 5: Solve for x
    x = 19,322,828,833.80/159,436.49
  6. Step 6: Final answer
    x = 121,194.52

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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.