Home / 100,206.26-138,218.10-64,441.52

Finding the Fourth Proportional to 100,206.26, 138,218.10 and 64,441.52

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Solution

The fourth proportional to 100,206.26, 138,218.10 and 64,441.52 is: 88,886.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,206.26 : 138,218.10 = 64,441.52 : x
  2. Step 2: Convert to fraction form
    100,206.26/138,218.10 = 64,441.52/x
  3. Step 3: Cross multiply
    100,206.26x = 138,218.10 × 64,441.52
  4. Step 4: Simplify right side
    100,206.26x = 8,906,983,764.42
  5. Step 5: Solve for x
    x = 8,906,983,764.42/100,206.26
  6. Step 6: Final answer
    x = 88,886.50

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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.