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Finding the Fourth Proportional to 143,833.55, 215,750.25 and 43,993.76

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Solution

The fourth proportional to 143,833.55, 215,750.25 and 43,993.76 is: 65,990.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,833.55 : 215,750.25 = 43,993.76 : x
  2. Step 2: Convert to fraction form
    143,833.55/215,750.25 = 43,993.76/x
  3. Step 3: Cross multiply
    143,833.55x = 215,750.25 × 43,993.76
  4. Step 4: Simplify right side
    143,833.55x = 9,491,663,639.69
  5. Step 5: Solve for x
    x = 9,491,663,639.69/143,833.55
  6. Step 6: Final answer
    x = 65,990.61

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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.