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Finding the Fourth Proportional to 100,584.95, 138,802.25 and 60,290.88

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Solution

The fourth proportional to 100,584.95, 138,802.25 and 60,290.88 is: 83,198.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,584.95 : 138,802.25 = 60,290.88 : x
  2. Step 2: Convert to fraction form
    100,584.95/138,802.25 = 60,290.88/x
  3. Step 3: Cross multiply
    100,584.95x = 138,802.25 × 60,290.88
  4. Step 4: Simplify right side
    100,584.95x = 8,368,509,497.03
  5. Step 5: Solve for x
    x = 8,368,509,497.03/100,584.95
  6. Step 6: Final answer
    x = 83,198.43

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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.