Home / 100,044.39-138,065.69-57,616.59

Finding the Fourth Proportional to 100,044.39, 138,065.69 and 57,616.59

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Solution

The fourth proportional to 100,044.39, 138,065.69 and 57,616.59 is: 79,513.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,044.39 : 138,065.69 = 57,616.59 : x
  2. Step 2: Convert to fraction form
    100,044.39/138,065.69 = 57,616.59/x
  3. Step 3: Cross multiply
    100,044.39x = 138,065.69 × 57,616.59
  4. Step 4: Simplify right side
    100,044.39x = 7,954,873,965.71
  5. Step 5: Solve for x
    x = 7,954,873,965.71/100,044.39
  6. Step 6: Final answer
    x = 79,513.44

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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.