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Finding the Fourth Proportional to 113,375.40, 169,868.70 and 73,912.20

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Solution

The fourth proportional to 113,375.40, 169,868.70 and 73,912.20 is: 110,741.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,375.40 : 169,868.70 = 73,912.20 : x
  2. Step 2: Convert to fraction form
    113,375.40/169,868.70 = 73,912.20/x
  3. Step 3: Cross multiply
    113,375.40x = 169,868.70 × 73,912.20
  4. Step 4: Simplify right side
    113,375.40x = 12,555,369,328.14
  5. Step 5: Solve for x
    x = 12,555,369,328.14/113,375.40
  6. Step 6: Final answer
    x = 110,741.57

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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.