Home / 135,709.05-187,279.53-74,454.84

Finding the Fourth Proportional to 135,709.05, 187,279.53 and 74,454.84

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Solution

The fourth proportional to 135,709.05, 187,279.53 and 74,454.84 is: 102,748.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,709.05 : 187,279.53 = 74,454.84 : x
  2. Step 2: Convert to fraction form
    135,709.05/187,279.53 = 74,454.84/x
  3. Step 3: Cross multiply
    135,709.05x = 187,279.53 × 74,454.84
  4. Step 4: Simplify right side
    135,709.05x = 13,943,867,441.43
  5. Step 5: Solve for x
    x = 13,943,867,441.43/135,709.05
  6. Step 6: Final answer
    x = 102,748.25

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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.