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Finding the Fourth Proportional to 137,603.26, 189,900.17 and 103,550.50

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Solution

The fourth proportional to 137,603.26, 189,900.17 and 103,550.50 is: 142,905.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,603.26 : 189,900.17 = 103,550.50 : x
  2. Step 2: Convert to fraction form
    137,603.26/189,900.17 = 103,550.50/x
  3. Step 3: Cross multiply
    137,603.26x = 189,900.17 × 103,550.50
  4. Step 4: Simplify right side
    137,603.26x = 19,664,257,553.59
  5. Step 5: Solve for x
    x = 19,664,257,553.59/137,603.26
  6. Step 6: Final answer
    x = 142,905.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.