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Finding the Fourth Proportional to 203,562.09, 280,920.18 and 112,915.11

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Solution

The fourth proportional to 203,562.09, 280,920.18 and 112,915.11 is: 155,825.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,562.09 : 280,920.18 = 112,915.11 : x
  2. Step 2: Convert to fraction form
    203,562.09/280,920.18 = 112,915.11/x
  3. Step 3: Cross multiply
    203,562.09x = 280,920.18 × 112,915.11
  4. Step 4: Simplify right side
    203,562.09x = 31,720,133,025.92
  5. Step 5: Solve for x
    x = 31,720,133,025.92/203,562.09
  6. Step 6: Final answer
    x = 155,825.35

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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.