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Finding the Fourth Proportional to 79,251.08, 118,168.09 and 77,073.80

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Solution

The fourth proportional to 79,251.08, 118,168.09 and 77,073.80 is: 114,921.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,251.08 : 118,168.09 = 77,073.80 : x
  2. Step 2: Convert to fraction form
    79,251.08/118,168.09 = 77,073.80/x
  3. Step 3: Cross multiply
    79,251.08x = 118,168.09 × 77,073.80
  4. Step 4: Simplify right side
    79,251.08x = 9,107,663,735.04
  5. Step 5: Solve for x
    x = 9,107,663,735.04/79,251.08
  6. Step 6: Final answer
    x = 114,921.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.