Home / 100,255.52-138,352.56-54,935.21

Finding the Fourth Proportional to 100,255.52, 138,352.56 and 54,935.21

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Solution

The fourth proportional to 100,255.52, 138,352.56 and 54,935.21 is: 75,810.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,255.52 : 138,352.56 = 54,935.21 : x
  2. Step 2: Convert to fraction form
    100,255.52/138,352.56 = 54,935.21/x
  3. Step 3: Cross multiply
    100,255.52x = 138,352.56 × 54,935.21
  4. Step 4: Simplify right side
    100,255.52x = 7,600,426,245.87
  5. Step 5: Solve for x
    x = 7,600,426,245.87/100,255.52
  6. Step 6: Final answer
    x = 75,810.56

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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.