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Finding the Fourth Proportional to 203,562.59, 280,920.87 and 112,915.61

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Solution

The fourth proportional to 203,562.59, 280,920.87 and 112,915.61 is: 155,826.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,562.59 : 280,920.87 = 112,915.61 : x
  2. Step 2: Convert to fraction form
    203,562.59/280,920.87 = 112,915.61/x
  3. Step 3: Cross multiply
    203,562.59x = 280,920.87 × 112,915.61
  4. Step 4: Simplify right side
    203,562.59x = 31,720,349,993.18
  5. Step 5: Solve for x
    x = 31,720,349,993.18/203,562.59
  6. Step 6: Final answer
    x = 155,826.03

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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.