Home / 154,351.86-212,937.97-90,660.94

Finding the Fourth Proportional to 154,351.86, 212,937.97 and 90,660.94

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Solution

The fourth proportional to 154,351.86, 212,937.97 and 90,660.94 is: 125,072.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,351.86 : 212,937.97 = 90,660.94 : x
  2. Step 2: Convert to fraction form
    154,351.86/212,937.97 = 90,660.94/x
  3. Step 3: Cross multiply
    154,351.86x = 212,937.97 × 90,660.94
  4. Step 4: Simplify right side
    154,351.86x = 19,305,156,521.89
  5. Step 5: Solve for x
    x = 19,305,156,521.89/154,351.86
  6. Step 6: Final answer
    x = 125,072.39

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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.