Home / 90,818.21-136,208.39-34,645.73

Finding the Fourth Proportional to 90,818.21, 136,208.39 and 34,645.73

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Solution

The fourth proportional to 90,818.21, 136,208.39 and 34,645.73 is: 51,961.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,818.21 : 136,208.39 = 34,645.73 : x
  2. Step 2: Convert to fraction form
    90,818.21/136,208.39 = 34,645.73/x
  3. Step 3: Cross multiply
    90,818.21x = 136,208.39 × 34,645.73
  4. Step 4: Simplify right side
    90,818.21x = 4,719,038,249.40
  5. Step 5: Solve for x
    x = 4,719,038,249.40/90,818.21
  6. Step 6: Final answer
    x = 51,961.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.