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Finding the Fourth Proportional to 135,340.70, 186,764.28 and 74,907.73

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Solution

The fourth proportional to 135,340.70, 186,764.28 and 74,907.73 is: 103,369.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,340.70 : 186,764.28 = 74,907.73 : x
  2. Step 2: Convert to fraction form
    135,340.70/186,764.28 = 74,907.73/x
  3. Step 3: Cross multiply
    135,340.70x = 186,764.28 × 74,907.73
  4. Step 4: Simplify right side
    135,340.70x = 13,990,087,885.35
  5. Step 5: Solve for x
    x = 13,990,087,885.35/135,340.70
  6. Step 6: Final answer
    x = 103,369.41

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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.