Home / 123,103.28-169,882.64-66,514.80

Finding the Fourth Proportional to 123,103.28, 169,882.64 and 66,514.80

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Solution

The fourth proportional to 123,103.28, 169,882.64 and 66,514.80 is: 91,790.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,103.28 : 169,882.64 = 66,514.80 : x
  2. Step 2: Convert to fraction form
    123,103.28/169,882.64 = 66,514.80/x
  3. Step 3: Cross multiply
    123,103.28x = 169,882.64 × 66,514.80
  4. Step 4: Simplify right side
    123,103.28x = 11,299,709,823.07
  5. Step 5: Solve for x
    x = 11,299,709,823.07/123,103.28
  6. Step 6: Final answer
    x = 91,790.49

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1.5x scale

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.