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Finding the Fourth Proportional to 135,963.36, 187,659.46 and 75,554.78

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Solution

The fourth proportional to 135,963.36, 187,659.46 and 75,554.78 is: 104,282.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,963.36 : 187,659.46 = 75,554.78 : x
  2. Step 2: Convert to fraction form
    135,963.36/187,659.46 = 75,554.78/x
  3. Step 3: Cross multiply
    135,963.36x = 187,659.46 × 75,554.78
  4. Step 4: Simplify right side
    135,963.36x = 14,178,569,215.22
  5. Step 5: Solve for x
    x = 14,178,569,215.22/135,963.36
  6. Step 6: Final answer
    x = 104,282.28

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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.