Home / 100,197.88-138,206.54-64,433.14

Finding the Fourth Proportional to 100,197.88, 138,206.54 and 64,433.14

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Solution

The fourth proportional to 100,197.88, 138,206.54 and 64,433.14 is: 88,874.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,197.88 : 138,206.54 = 64,433.14 : x
  2. Step 2: Convert to fraction form
    100,197.88/138,206.54 = 64,433.14/x
  3. Step 3: Cross multiply
    100,197.88x = 138,206.54 × 64,433.14
  4. Step 4: Simplify right side
    100,197.88x = 8,905,081,156.30
  5. Step 5: Solve for x
    x = 8,905,081,156.30/100,197.88
  6. Step 6: Final answer
    x = 88,874.95

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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.