Home / 154,177.07-212,823.18-100,475.28

Finding the Fourth Proportional to 154,177.07, 212,823.18 and 100,475.28

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Solution

The fourth proportional to 154,177.07, 212,823.18 and 100,475.28 is: 138,694.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,177.07 : 212,823.18 = 100,475.28 : x
  2. Step 2: Convert to fraction form
    154,177.07/212,823.18 = 100,475.28/x
  3. Step 3: Cross multiply
    154,177.07x = 212,823.18 × 100,475.28
  4. Step 4: Simplify right side
    154,177.07x = 21,383,468,600.99
  5. Step 5: Solve for x
    x = 21,383,468,600.99/154,177.07
  6. Step 6: Final answer
    x = 138,694.23

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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.