Home / 90,146.88-124,401.69-49,861.53

Finding the Fourth Proportional to 90,146.88, 124,401.69 and 49,861.53

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Solution

The fourth proportional to 90,146.88, 124,401.69 and 49,861.53 is: 68,808.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,146.88 : 124,401.69 = 49,861.53 : x
  2. Step 2: Convert to fraction form
    90,146.88/124,401.69 = 49,861.53/x
  3. Step 3: Cross multiply
    90,146.88x = 124,401.69 × 49,861.53
  4. Step 4: Simplify right side
    90,146.88x = 6,202,858,597.99
  5. Step 5: Solve for x
    x = 6,202,858,597.99/90,146.88
  6. Step 6: Final answer
    x = 68,808.36

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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.