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Finding the Fourth Proportional to 124,305.87, 171,554.49 and 75,905.13

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Solution

The fourth proportional to 124,305.87, 171,554.49 and 75,905.13 is: 104,756.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,305.87 : 171,554.49 = 75,905.13 : x
  2. Step 2: Convert to fraction form
    124,305.87/171,554.49 = 75,905.13/x
  3. Step 3: Cross multiply
    124,305.87x = 171,554.49 × 75,905.13
  4. Step 4: Simplify right side
    124,305.87x = 13,021,865,865.53
  5. Step 5: Solve for x
    x = 13,021,865,865.53/124,305.87
  6. Step 6: Final answer
    x = 104,756.64

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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.