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Finding the Fourth Proportional to 147,205.04, 220,471.29 and 87,919.11

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Solution

The fourth proportional to 147,205.04, 220,471.29 and 87,919.11 is: 131,677.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,205.04 : 220,471.29 = 87,919.11 : x
  2. Step 2: Convert to fraction form
    147,205.04/220,471.29 = 87,919.11/x
  3. Step 3: Cross multiply
    147,205.04x = 220,471.29 × 87,919.11
  4. Step 4: Simplify right side
    147,205.04x = 19,383,639,597.35
  5. Step 5: Solve for x
    x = 19,383,639,597.35/147,205.04
  6. Step 6: Final answer
    x = 131,677.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.