Home / 154,338.48-212,924.40-100,604.64

Finding the Fourth Proportional to 154,338.48, 212,924.40 and 100,604.64

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Solution

The fourth proportional to 154,338.48, 212,924.40 and 100,604.64 is: 138,793.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,338.48 : 212,924.40 = 100,604.64 : x
  2. Step 2: Convert to fraction form
    154,338.48/212,924.40 = 100,604.64/x
  3. Step 3: Cross multiply
    154,338.48x = 212,924.40 × 100,604.64
  4. Step 4: Simplify right side
    154,338.48x = 21,421,182,609.22
  5. Step 5: Solve for x
    x = 21,421,182,609.22/154,338.48
  6. Step 6: Final answer
    x = 138,793.53

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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.