Home / 103,721.10-155,236.05-95,426.70

Finding the Fourth Proportional to 103,721.10, 155,236.05 and 95,426.70

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Solution

The fourth proportional to 103,721.10, 155,236.05 and 95,426.70 is: 142,822.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,721.10 : 155,236.05 = 95,426.70 : x
  2. Step 2: Convert to fraction form
    103,721.10/155,236.05 = 95,426.70/x
  3. Step 3: Cross multiply
    103,721.10x = 155,236.05 × 95,426.70
  4. Step 4: Simplify right side
    103,721.10x = 14,813,663,972.54
  5. Step 5: Solve for x
    x = 14,813,663,972.54/103,721.10
  6. Step 6: Final answer
    x = 142,822.09

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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.