Home / 100,161.06-138,217.02-54,830.37

Finding the Fourth Proportional to 100,161.06, 138,217.02 and 54,830.37

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Solution

The fourth proportional to 100,161.06, 138,217.02 and 54,830.37 is: 75,663.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,161.06 : 138,217.02 = 54,830.37 : x
  2. Step 2: Convert to fraction form
    100,161.06/138,217.02 = 54,830.37/x
  3. Step 3: Cross multiply
    100,161.06x = 138,217.02 × 54,830.37
  4. Step 4: Simplify right side
    100,161.06x = 7,578,489,882.13
  5. Step 5: Solve for x
    x = 7,578,489,882.13/100,161.06
  6. Step 6: Final answer
    x = 75,663.03

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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.