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Finding the Fourth Proportional to 159,465.06, 220,061.79 and 87,845.04

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Solution

The fourth proportional to 159,465.06, 220,061.79 and 87,845.04 is: 121,226.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,465.06 : 220,061.79 = 87,845.04 : x
  2. Step 2: Convert to fraction form
    159,465.06/220,061.79 = 87,845.04/x
  3. Step 3: Cross multiply
    159,465.06x = 220,061.79 × 87,845.04
  4. Step 4: Simplify right side
    159,465.06x = 19,331,336,745.02
  5. Step 5: Solve for x
    x = 19,331,336,745.02/159,465.06
  6. Step 6: Final answer
    x = 121,226.16

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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.