Home / 106,855.20-147,505.68-66,589.02

Finding the Fourth Proportional to 106,855.20, 147,505.68 and 66,589.02

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Solution

The fourth proportional to 106,855.20, 147,505.68 and 66,589.02 is: 91,921.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,855.20 : 147,505.68 = 66,589.02 : x
  2. Step 2: Convert to fraction form
    106,855.20/147,505.68 = 66,589.02/x
  3. Step 3: Cross multiply
    106,855.20x = 147,505.68 × 66,589.02
  4. Step 4: Simplify right side
    106,855.20x = 9,822,258,675.63
  5. Step 5: Solve for x
    x = 9,822,258,675.63/106,855.20
  6. Step 6: Final answer
    x = 91,921.20

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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.