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Finding the Fourth Proportional to 112,215.90, 168,093.45 and 91,479.90

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Solution

The fourth proportional to 112,215.90, 168,093.45 and 91,479.90 is: 137,032.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,215.90 : 168,093.45 = 91,479.90 : x
  2. Step 2: Convert to fraction form
    112,215.90/168,093.45 = 91,479.90/x
  3. Step 3: Cross multiply
    112,215.90x = 168,093.45 × 91,479.90
  4. Step 4: Simplify right side
    112,215.90x = 15,377,171,996.66
  5. Step 5: Solve for x
    x = 15,377,171,996.66/112,215.90
  6. Step 6: Final answer
    x = 137,032.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.