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Finding the Fourth Proportional to 100,773.25, 138,995.95 and 68,488.92

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Solution

The fourth proportional to 100,773.25, 138,995.95 and 68,488.92 is: 94,466.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,773.25 : 138,995.95 = 68,488.92 : x
  2. Step 2: Convert to fraction form
    100,773.25/138,995.95 = 68,488.92/x
  3. Step 3: Cross multiply
    100,773.25x = 138,995.95 × 68,488.92
  4. Step 4: Simplify right side
    100,773.25x = 9,519,682,066.14
  5. Step 5: Solve for x
    x = 9,519,682,066.14/100,773.25
  6. Step 6: Final answer
    x = 94,466.36

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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.