Home / 90,148.16-124,396.10-49,861.05

Finding the Fourth Proportional to 90,148.16, 124,396.10 and 49,861.05

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Solution

The fourth proportional to 90,148.16, 124,396.10 and 49,861.05 is: 68,803.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,148.16 : 124,396.10 = 49,861.05 : x
  2. Step 2: Convert to fraction form
    90,148.16/124,396.10 = 49,861.05/x
  3. Step 3: Cross multiply
    90,148.16x = 124,396.10 × 49,861.05
  4. Step 4: Simplify right side
    90,148.16x = 6,202,519,912.60
  5. Step 5: Solve for x
    x = 6,202,519,912.60/90,148.16
  6. Step 6: Final answer
    x = 68,803.63

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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.