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Finding the Fourth Proportional to 154,424.88, 213,067.80 and 90,750.24

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Solution

The fourth proportional to 154,424.88, 213,067.80 and 90,750.24 is: 125,212.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,424.88 : 213,067.80 = 90,750.24 : x
  2. Step 2: Convert to fraction form
    154,424.88/213,067.80 = 90,750.24/x
  3. Step 3: Cross multiply
    154,424.88x = 213,067.80 × 90,750.24
  4. Step 4: Simplify right side
    154,424.88x = 19,335,953,986.27
  5. Step 5: Solve for x
    x = 19,335,953,986.27/154,424.88
  6. Step 6: Final answer
    x = 125,212.69

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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.