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Finding the Fourth Proportional to 109,992.84, 151,675.38 and 65,272.20

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Solution

The fourth proportional to 109,992.84, 151,675.38 and 65,272.20 is: 90,007.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,992.84 : 151,675.38 = 65,272.20 : x
  2. Step 2: Convert to fraction form
    109,992.84/151,675.38 = 65,272.20/x
  3. Step 3: Cross multiply
    109,992.84x = 151,675.38 × 65,272.20
  4. Step 4: Simplify right side
    109,992.84x = 9,900,185,738.44
  5. Step 5: Solve for x
    x = 9,900,185,738.44/109,992.84
  6. Step 6: Final answer
    x = 90,007.55

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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.