Home / 135,524.55-187,026.58-78,939.57

Finding the Fourth Proportional to 135,524.55, 187,026.58 and 78,939.57

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Solution

The fourth proportional to 135,524.55, 187,026.58 and 78,939.57 is: 108,938.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,524.55 : 187,026.58 = 78,939.57 : x
  2. Step 2: Convert to fraction form
    135,524.55/187,026.58 = 78,939.57/x
  3. Step 3: Cross multiply
    135,524.55x = 187,026.58 × 78,939.57
  4. Step 4: Simplify right side
    135,524.55x = 14,763,796,473.94
  5. Step 5: Solve for x
    x = 14,763,796,473.94/135,524.55
  6. Step 6: Final answer
    x = 108,938.17

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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.