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Finding the Fourth Proportional to 112,290.68, 168,351.72 and 67,908.32

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Solution

The fourth proportional to 112,290.68, 168,351.72 and 67,908.32 is: 101,811.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,290.68 : 168,351.72 = 67,908.32 : x
  2. Step 2: Convert to fraction form
    112,290.68/168,351.72 = 67,908.32/x
  3. Step 3: Cross multiply
    112,290.68x = 168,351.72 × 67,908.32
  4. Step 4: Simplify right side
    112,290.68x = 11,432,482,474.31
  5. Step 5: Solve for x
    x = 11,432,482,474.31/112,290.68
  6. Step 6: Final answer
    x = 101,811.50

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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.