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Finding the Fourth Proportional to 139,000.22, 206,712.14 and 134,571.56

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Solution

The fourth proportional to 139,000.22, 206,712.14 and 134,571.56 is: 200,126.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,000.22 : 206,712.14 = 134,571.56 : x
  2. Step 2: Convert to fraction form
    139,000.22/206,712.14 = 134,571.56/x
  3. Step 3: Cross multiply
    139,000.22x = 206,712.14 × 134,571.56
  4. Step 4: Simplify right side
    139,000.22x = 27,817,575,150.74
  5. Step 5: Solve for x
    x = 27,817,575,150.74/139,000.22
  6. Step 6: Final answer
    x = 200,126.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.