Home / 154,098.78-212,651.49-90,435.21

Finding the Fourth Proportional to 154,098.78, 212,651.49 and 90,435.21

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Solution

The fourth proportional to 154,098.78, 212,651.49 and 90,435.21 is: 124,797.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,098.78 : 212,651.49 = 90,435.21 : x
  2. Step 2: Convert to fraction form
    154,098.78/212,651.49 = 90,435.21/x
  3. Step 3: Cross multiply
    154,098.78x = 212,651.49 × 90,435.21
  4. Step 4: Simplify right side
    154,098.78x = 19,231,182,154.96
  5. Step 5: Solve for x
    x = 19,231,182,154.96/154,098.78
  6. Step 6: Final answer
    x = 124,797.76

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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.