Home / 123,821.55-185,568.30-109,715.40

Finding the Fourth Proportional to 123,821.55, 185,568.30 and 109,715.40

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Solution

The fourth proportional to 123,821.55, 185,568.30 and 109,715.40 is: 164,427.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,821.55 : 185,568.30 = 109,715.40 : x
  2. Step 2: Convert to fraction form
    123,821.55/185,568.30 = 109,715.40/x
  3. Step 3: Cross multiply
    123,821.55x = 185,568.30 × 109,715.40
  4. Step 4: Simplify right side
    123,821.55x = 20,359,700,261.82
  5. Step 5: Solve for x
    x = 20,359,700,261.82/123,821.55
  6. Step 6: Final answer
    x = 164,427.76

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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.