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Finding the Fourth Proportional to 108,869, 150,237.92 and 61,121.12

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Solution

The fourth proportional to 108,869, 150,237.92 and 61,121.12 is: 84,346.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,869 : 150,237.92 = 61,121.12 : x
  2. Step 2: Convert to fraction form
    108,869/150,237.92 = 61,121.12/x
  3. Step 3: Cross multiply
    108,869x = 150,237.92 × 61,121.12
  4. Step 4: Simplify right side
    108,869x = 9,182,709,936.87
  5. Step 5: Solve for x
    x = 9,182,709,936.87/108,869
  6. Step 6: Final answer
    x = 84,346.42

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1.5x scale

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.