Home / 135,524.05-187,025.89-78,939.07

Finding the Fourth Proportional to 135,524.05, 187,025.89 and 78,939.07

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Solution

The fourth proportional to 135,524.05, 187,025.89 and 78,939.07 is: 108,937.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,524.05 : 187,025.89 = 78,939.07 : x
  2. Step 2: Convert to fraction form
    135,524.05/187,025.89 = 78,939.07/x
  3. Step 3: Cross multiply
    135,524.05x = 187,025.89 × 78,939.07
  4. Step 4: Simplify right side
    135,524.05x = 14,763,648,492.70
  5. Step 5: Solve for x
    x = 14,763,648,492.70/135,524.05
  6. Step 6: Final answer
    x = 108,937.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.