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Finding the Fourth Proportional to 139,408.49, 208,995.17 and 60,463.26

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Solution

The fourth proportional to 139,408.49, 208,995.17 and 60,463.26 is: 90,643.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,408.49 : 208,995.17 = 60,463.26 : x
  2. Step 2: Convert to fraction form
    139,408.49/208,995.17 = 60,463.26/x
  3. Step 3: Cross multiply
    139,408.49x = 208,995.17 × 60,463.26
  4. Step 4: Simplify right side
    139,408.49x = 12,636,529,453.61
  5. Step 5: Solve for x
    x = 12,636,529,453.61/139,408.49
  6. Step 6: Final answer
    x = 90,643.90

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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.