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Finding the Fourth Proportional to 134,756.70, 202,106.70 and 68,134.20

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Solution

The fourth proportional to 134,756.70, 202,106.70 and 68,134.20 is: 102,186.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,756.70 : 202,106.70 = 68,134.20 : x
  2. Step 2: Convert to fraction form
    134,756.70/202,106.70 = 68,134.20/x
  3. Step 3: Cross multiply
    134,756.70x = 202,106.70 × 68,134.20
  4. Step 4: Simplify right side
    134,756.70x = 13,770,378,319.14
  5. Step 5: Solve for x
    x = 13,770,378,319.14/134,756.70
  6. Step 6: Final answer
    x = 102,186.97

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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.