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Finding the Fourth Proportional to 154,930.70, 213,846.28 and 91,288.46

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Solution

The fourth proportional to 154,930.70, 213,846.28 and 91,288.46 is: 126,002.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,930.70 : 213,846.28 = 91,288.46 : x
  2. Step 2: Convert to fraction form
    154,930.70/213,846.28 = 91,288.46/x
  3. Step 3: Cross multiply
    154,930.70x = 213,846.28 × 91,288.46
  4. Step 4: Simplify right side
    154,930.70x = 19,521,697,577.93
  5. Step 5: Solve for x
    x = 19,521,697,577.93/154,930.70
  6. Step 6: Final answer
    x = 126,002.77

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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.