Home / 154,164.20-212,782.14-100,355.49

Finding the Fourth Proportional to 154,164.20, 212,782.14 and 100,355.49

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Solution

The fourth proportional to 154,164.20, 212,782.14 and 100,355.49 is: 138,513.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,164.20 : 212,782.14 = 100,355.49 : x
  2. Step 2: Convert to fraction form
    154,164.20/212,782.14 = 100,355.49/x
  3. Step 3: Cross multiply
    154,164.20x = 212,782.14 × 100,355.49
  4. Step 4: Simplify right side
    154,164.20x = 21,353,855,922.95
  5. Step 5: Solve for x
    x = 21,353,855,922.95/154,164.20
  6. Step 6: Final answer
    x = 138,513.72

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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.