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Finding the Fourth Proportional to 139,626.51, 207,860.46 and 138,796.13

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Solution

The fourth proportional to 139,626.51, 207,860.46 and 138,796.13 is: 206,624.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,626.51 : 207,860.46 = 138,796.13 : x
  2. Step 2: Convert to fraction form
    139,626.51/207,860.46 = 138,796.13/x
  3. Step 3: Cross multiply
    139,626.51x = 207,860.46 × 138,796.13
  4. Step 4: Simplify right side
    139,626.51x = 28,850,227,428.02
  5. Step 5: Solve for x
    x = 28,850,227,428.02/139,626.51
  6. Step 6: Final answer
    x = 206,624.28

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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.