Home / 100,266.35-138,365.37-54,943.34

Finding the Fourth Proportional to 100,266.35, 138,365.37 and 54,943.34

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Solution

The fourth proportional to 100,266.35, 138,365.37 and 54,943.34 is: 75,820.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,266.35 : 138,365.37 = 54,943.34 : x
  2. Step 2: Convert to fraction form
    100,266.35/138,365.37 = 54,943.34/x
  3. Step 3: Cross multiply
    100,266.35x = 138,365.37 × 54,943.34
  4. Step 4: Simplify right side
    100,266.35x = 7,602,255,568.14
  5. Step 5: Solve for x
    x = 7,602,255,568.14/100,266.35
  6. Step 6: Final answer
    x = 75,820.61

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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.