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Finding the Fourth Proportional to 90,198.59, 124,487.25 and 51,950.78

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Solution

The fourth proportional to 90,198.59, 124,487.25 and 51,950.78 is: 71,699.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,198.59 : 124,487.25 = 51,950.78 : x
  2. Step 2: Convert to fraction form
    90,198.59/124,487.25 = 51,950.78/x
  3. Step 3: Cross multiply
    90,198.59x = 124,487.25 × 51,950.78
  4. Step 4: Simplify right side
    90,198.59x = 6,467,209,581.95
  5. Step 5: Solve for x
    x = 6,467,209,581.95/90,198.59
  6. Step 6: Final answer
    x = 71,699.68

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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.