Home / 154,317.49-212,964.20-90,654.73

Finding the Fourth Proportional to 154,317.49, 212,964.20 and 90,654.73

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Solution

The fourth proportional to 154,317.49, 212,964.20 and 90,654.73 is: 125,107.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,317.49 : 212,964.20 = 90,654.73 : x
  2. Step 2: Convert to fraction form
    154,317.49/212,964.20 = 90,654.73/x
  3. Step 3: Cross multiply
    154,317.49x = 212,964.20 × 90,654.73
  4. Step 4: Simplify right side
    154,317.49x = 19,306,212,050.67
  5. Step 5: Solve for x
    x = 19,306,212,050.67/154,317.49
  6. Step 6: Final answer
    x = 125,107.09

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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.