Home / 100,203.24-138,280.66-54,262.76

Finding the Fourth Proportional to 100,203.24, 138,280.66 and 54,262.76

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Solution

The fourth proportional to 100,203.24, 138,280.66 and 54,262.76 is: 74,882.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,203.24 : 138,280.66 = 54,262.76 : x
  2. Step 2: Convert to fraction form
    100,203.24/138,280.66 = 54,262.76/x
  3. Step 3: Cross multiply
    100,203.24x = 138,280.66 × 54,262.76
  4. Step 4: Simplify right side
    100,203.24x = 7,503,490,266.22
  5. Step 5: Solve for x
    x = 7,503,490,266.22/100,203.24
  6. Step 6: Final answer
    x = 74,882.71

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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.