Home / 123,515.43-170,451.59-66,926.81

Finding the Fourth Proportional to 123,515.43, 170,451.59 and 66,926.81

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Solution

The fourth proportional to 123,515.43, 170,451.59 and 66,926.81 is: 92,359.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,515.43 : 170,451.59 = 66,926.81 : x
  2. Step 2: Convert to fraction form
    123,515.43/170,451.59 = 66,926.81/x
  3. Step 3: Cross multiply
    123,515.43x = 170,451.59 × 66,926.81
  4. Step 4: Simplify right side
    123,515.43x = 11,407,779,991.24
  5. Step 5: Solve for x
    x = 11,407,779,991.24/123,515.43
  6. Step 6: Final answer
    x = 92,359.15

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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.