Home / 100,124.16-138,170.10-54,801.96

Finding the Fourth Proportional to 100,124.16, 138,170.10 and 54,801.96

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Solution

The fourth proportional to 100,124.16, 138,170.10 and 54,801.96 is: 75,626.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,124.16 : 138,170.10 = 54,801.96 : x
  2. Step 2: Convert to fraction form
    100,124.16/138,170.10 = 54,801.96/x
  3. Step 3: Cross multiply
    100,124.16x = 138,170.10 × 54,801.96
  4. Step 4: Simplify right side
    100,124.16x = 7,571,992,293.40
  5. Step 5: Solve for x
    x = 7,571,992,293.40/100,124.16
  6. Step 6: Final answer
    x = 75,626.03

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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.