Home / 154,173.20-212,794.56-100,364.49

Finding the Fourth Proportional to 154,173.20, 212,794.56 and 100,364.49

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Solution

The fourth proportional to 154,173.20, 212,794.56 and 100,364.49 is: 138,526.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,173.20 : 212,794.56 = 100,364.49 : x
  2. Step 2: Convert to fraction form
    154,173.20/212,794.56 = 100,364.49/x
  3. Step 3: Cross multiply
    154,173.20x = 212,794.56 × 100,364.49
  4. Step 4: Simplify right side
    154,173.20x = 21,357,017,489.17
  5. Step 5: Solve for x
    x = 21,357,017,489.17/154,173.20
  6. Step 6: Final answer
    x = 138,526.14

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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.