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Finding the Fourth Proportional to 139,062.14, 208,645.41 and 64,218.14

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Solution

The fourth proportional to 139,062.14, 208,645.41 and 64,218.14 is: 96,351.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,062.14 : 208,645.41 = 64,218.14 : x
  2. Step 2: Convert to fraction form
    139,062.14/208,645.41 = 64,218.14/x
  3. Step 3: Cross multiply
    139,062.14x = 208,645.41 × 64,218.14
  4. Step 4: Simplify right side
    139,062.14x = 13,398,820,149.74
  5. Step 5: Solve for x
    x = 13,398,820,149.74/139,062.14
  6. Step 6: Final answer
    x = 96,351.32

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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.