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Finding the Fourth Proportional to 159,486.06, 220,100.72 and 87,866.08

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Solution

The fourth proportional to 159,486.06, 220,100.72 and 87,866.08 is: 121,260.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,486.06 : 220,100.72 = 87,866.08 : x
  2. Step 2: Convert to fraction form
    159,486.06/220,100.72 = 87,866.08/x
  3. Step 3: Cross multiply
    159,486.06x = 220,100.72 × 87,866.08
  4. Step 4: Simplify right side
    159,486.06x = 19,339,387,471.58
  5. Step 5: Solve for x
    x = 19,339,387,471.58/159,486.06
  6. Step 6: Final answer
    x = 121,260.68

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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.