Home / 100,669.47-138,923.96-55,348.22

Finding the Fourth Proportional to 100,669.47, 138,923.96 and 55,348.22

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Solution

The fourth proportional to 100,669.47, 138,923.96 and 55,348.22 is: 76,380.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,669.47 : 138,923.96 = 55,348.22 : x
  2. Step 2: Convert to fraction form
    100,669.47/138,923.96 = 55,348.22/x
  3. Step 3: Cross multiply
    100,669.47x = 138,923.96 × 55,348.22
  4. Step 4: Simplify right side
    100,669.47x = 7,689,192,929.99
  5. Step 5: Solve for x
    x = 7,689,192,929.99/100,669.47
  6. Step 6: Final answer
    x = 76,380.58

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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.