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Finding the Fourth Proportional to 203,563.80, 280,919.73 and 112,925.70

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Solution

The fourth proportional to 203,563.80, 280,919.73 and 112,925.70 is: 155,838.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,563.80 : 280,919.73 = 112,925.70 : x
  2. Step 2: Convert to fraction form
    203,563.80/280,919.73 = 112,925.70/x
  3. Step 3: Cross multiply
    203,563.80x = 280,919.73 × 112,925.70
  4. Step 4: Simplify right side
    203,563.80x = 31,723,057,154.06
  5. Step 5: Solve for x
    x = 31,723,057,154.06/203,563.80
  6. Step 6: Final answer
    x = 155,838.40

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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.