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Finding the Fourth Proportional to 139,299.36, 208,984.41 and 64,473.45

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Solution

The fourth proportional to 139,299.36, 208,984.41 and 64,473.45 is: 96,726.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,299.36 : 208,984.41 = 64,473.45 : x
  2. Step 2: Convert to fraction form
    139,299.36/208,984.41 = 64,473.45/x
  3. Step 3: Cross multiply
    139,299.36x = 208,984.41 × 64,473.45
  4. Step 4: Simplify right side
    139,299.36x = 13,473,945,908.91
  5. Step 5: Solve for x
    x = 13,473,945,908.91/139,299.36
  6. Step 6: Final answer
    x = 96,726.55

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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.