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Finding the Fourth Proportional to 154,097.78, 212,650.11 and 90,434.21

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Solution

The fourth proportional to 154,097.78, 212,650.11 and 90,434.21 is: 124,796.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,097.78 : 212,650.11 = 90,434.21 : x
  2. Step 2: Convert to fraction form
    154,097.78/212,650.11 = 90,434.21/x
  3. Step 3: Cross multiply
    154,097.78x = 212,650.11 × 90,434.21
  4. Step 4: Simplify right side
    154,097.78x = 19,230,844,704.26
  5. Step 5: Solve for x
    x = 19,230,844,704.26/154,097.78
  6. Step 6: Final answer
    x = 124,796.38

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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.