Home / 115,947.68-173,956.20-66,665.12

Finding the Fourth Proportional to 115,947.68, 173,956.20 and 66,665.12

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Solution

The fourth proportional to 115,947.68, 173,956.20 and 66,665.12 is: 100,017.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,947.68 : 173,956.20 = 66,665.12 : x
  2. Step 2: Convert to fraction form
    115,947.68/173,956.20 = 66,665.12/x
  3. Step 3: Cross multiply
    115,947.68x = 173,956.20 × 66,665.12
  4. Step 4: Simplify right side
    115,947.68x = 11,596,810,947.74
  5. Step 5: Solve for x
    x = 11,596,810,947.74/115,947.68
  6. Step 6: Final answer
    x = 100,017.62

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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.