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Finding the Fourth Proportional to 112,414.10, 168,621.15 and 87,530.90

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Solution

The fourth proportional to 112,414.10, 168,621.15 and 87,530.90 is: 131,296.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,414.10 : 168,621.15 = 87,530.90 : x
  2. Step 2: Convert to fraction form
    112,414.10/168,621.15 = 87,530.90/x
  3. Step 3: Cross multiply
    112,414.10x = 168,621.15 × 87,530.90
  4. Step 4: Simplify right side
    112,414.10x = 14,759,561,018.54
  5. Step 5: Solve for x
    x = 14,759,561,018.54/112,414.10
  6. Step 6: Final answer
    x = 131,296.35

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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.