Home / 154,277.12-212,839.60-100,542.56

Finding the Fourth Proportional to 154,277.12, 212,839.60 and 100,542.56

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Solution

The fourth proportional to 154,277.12, 212,839.60 and 100,542.56 is: 138,707.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,277.12 : 212,839.60 = 100,542.56 : x
  2. Step 2: Convert to fraction form
    154,277.12/212,839.60 = 100,542.56/x
  3. Step 3: Cross multiply
    154,277.12x = 212,839.60 × 100,542.56
  4. Step 4: Simplify right side
    154,277.12x = 21,399,438,253.38
  5. Step 5: Solve for x
    x = 21,399,438,253.38/154,277.12
  6. Step 6: Final answer
    x = 138,707.79

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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.