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Finding the Fourth Proportional to 98,149.65, 135,436.34 and 55,133.97

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Solution

The fourth proportional to 98,149.65, 135,436.34 and 55,133.97 is: 76,079.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,149.65 : 135,436.34 = 55,133.97 : x
  2. Step 2: Convert to fraction form
    98,149.65/135,436.34 = 55,133.97/x
  3. Step 3: Cross multiply
    98,149.65x = 135,436.34 × 55,133.97
  4. Step 4: Simplify right side
    98,149.65x = 7,467,143,106.47
  5. Step 5: Solve for x
    x = 7,467,143,106.47/98,149.65
  6. Step 6: Final answer
    x = 76,079.16

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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.