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Finding the Fourth Proportional to 172,593.04, 258,919.08 and 79,106.80

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Solution

The fourth proportional to 172,593.04, 258,919.08 and 79,106.80 is: 118,673.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,593.04 : 258,919.08 = 79,106.80 : x
  2. Step 2: Convert to fraction form
    172,593.04/258,919.08 = 79,106.80/x
  3. Step 3: Cross multiply
    172,593.04x = 258,919.08 × 79,106.80
  4. Step 4: Simplify right side
    172,593.04x = 20,482,259,877.74
  5. Step 5: Solve for x
    x = 20,482,259,877.74/172,593.04
  6. Step 6: Final answer
    x = 118,673.73

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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.