Home / 154,176.20-212,798.70-100,367.49

Finding the Fourth Proportional to 154,176.20, 212,798.70 and 100,367.49

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Solution

The fourth proportional to 154,176.20, 212,798.70 and 100,367.49 is: 138,530.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,176.20 : 212,798.70 = 100,367.49 : x
  2. Step 2: Convert to fraction form
    154,176.20/212,798.70 = 100,367.49/x
  3. Step 3: Cross multiply
    154,176.20x = 212,798.70 × 100,367.49
  4. Step 4: Simplify right side
    154,176.20x = 21,358,071,394.26
  5. Step 5: Solve for x
    x = 21,358,071,394.26/154,176.20
  6. Step 6: Final answer
    x = 138,530.28

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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.