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Finding the Fourth Proportional to 118,970.92, 178,218.45 and 71,559.84

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Solution

The fourth proportional to 118,970.92, 178,218.45 and 71,559.84 is: 107,196.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,970.92 : 178,218.45 = 71,559.84 : x
  2. Step 2: Convert to fraction form
    118,970.92/178,218.45 = 71,559.84/x
  3. Step 3: Cross multiply
    118,970.92x = 178,218.45 × 71,559.84
  4. Step 4: Simplify right side
    118,970.92x = 12,753,283,767.05
  5. Step 5: Solve for x
    x = 12,753,283,767.05/118,970.92
  6. Step 6: Final answer
    x = 107,196.65

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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.