Home / 100,448.00-138,624.48-66,397.43

Finding the Fourth Proportional to 100,448.00, 138,624.48 and 66,397.43

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Solution

The fourth proportional to 100,448.00, 138,624.48 and 66,397.43 is: 91,632.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,448.00 : 138,624.48 = 66,397.43 : x
  2. Step 2: Convert to fraction form
    100,448.00/138,624.48 = 66,397.43/x
  3. Step 3: Cross multiply
    100,448.00x = 138,624.48 × 66,397.43
  4. Step 4: Simplify right side
    100,448.00x = 9,204,309,468.47
  5. Step 5: Solve for x
    x = 9,204,309,468.47/100,448.00
  6. Step 6: Final answer
    x = 91,632.58

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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.