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Finding the Fourth Proportional to 203,605.89, 280,966.65 and 112,960.89

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Solution

The fourth proportional to 203,605.89, 280,966.65 and 112,960.89 is: 155,880.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,605.89 : 280,966.65 = 112,960.89 : x
  2. Step 2: Convert to fraction form
    203,605.89/280,966.65 = 112,960.89/x
  3. Step 3: Cross multiply
    203,605.89x = 280,966.65 × 112,960.89
  4. Step 4: Simplify right side
    203,605.89x = 31,738,242,844.32
  5. Step 5: Solve for x
    x = 31,738,242,844.32/203,605.89
  6. Step 6: Final answer
    x = 155,880.77

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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.