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Finding the Fourth Proportional to 118,757.32, 178,144.62 and 39,870.88

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Solution

The fourth proportional to 118,757.32, 178,144.62 and 39,870.88 is: 59,809.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,757.32 : 178,144.62 = 39,870.88 : x
  2. Step 2: Convert to fraction form
    118,757.32/178,144.62 = 39,870.88/x
  3. Step 3: Cross multiply
    118,757.32x = 178,144.62 × 39,870.88
  4. Step 4: Simplify right side
    118,757.32x = 7,102,782,766.67
  5. Step 5: Solve for x
    x = 7,102,782,766.67/118,757.32
  6. Step 6: Final answer
    x = 59,809.22

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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.