Home / 123,579.40-185,369.10-83,921.80

Finding the Fourth Proportional to 123,579.40, 185,369.10 and 83,921.80

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Solution

The fourth proportional to 123,579.40, 185,369.10 and 83,921.80 is: 125,882.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,579.40 : 185,369.10 = 83,921.80 : x
  2. Step 2: Convert to fraction form
    123,579.40/185,369.10 = 83,921.80/x
  3. Step 3: Cross multiply
    123,579.40x = 185,369.10 × 83,921.80
  4. Step 4: Simplify right side
    123,579.40x = 15,556,508,536.38
  5. Step 5: Solve for x
    x = 15,556,508,536.38/123,579.40
  6. Step 6: Final answer
    x = 125,882.70

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1.5x scale

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.