Home / 100,172.48-138,238.25-54,232.61

Finding the Fourth Proportional to 100,172.48, 138,238.25 and 54,232.61

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Solution

The fourth proportional to 100,172.48, 138,238.25 and 54,232.61 is: 74,841.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,172.48 : 138,238.25 = 54,232.61 : x
  2. Step 2: Convert to fraction form
    100,172.48/138,238.25 = 54,232.61/x
  3. Step 3: Cross multiply
    100,172.48x = 138,238.25 × 54,232.61
  4. Step 4: Simplify right side
    100,172.48x = 7,497,021,099.33
  5. Step 5: Solve for x
    x = 7,497,021,099.33/100,172.48
  6. Step 6: Final answer
    x = 74,841.13

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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.