Home / 100,022.80-138,044.52-57,583.12

Finding the Fourth Proportional to 100,022.80, 138,044.52 and 57,583.12

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Solution

The fourth proportional to 100,022.80, 138,044.52 and 57,583.12 is: 79,472.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,022.80 : 138,044.52 = 57,583.12 : x
  2. Step 2: Convert to fraction form
    100,022.80/138,044.52 = 57,583.12/x
  3. Step 3: Cross multiply
    100,022.80x = 138,044.52 × 57,583.12
  4. Step 4: Simplify right side
    100,022.80x = 7,949,034,160.50
  5. Step 5: Solve for x
    x = 7,949,034,160.50/100,022.80
  6. Step 6: Final answer
    x = 79,472.22

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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.