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Finding the Fourth Proportional to 203,011.50, 280,156.49 and 112,373.76

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Solution

The fourth proportional to 203,011.50, 280,156.49 and 112,373.76 is: 155,076.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,011.50 : 280,156.49 = 112,373.76 : x
  2. Step 2: Convert to fraction form
    203,011.50/280,156.49 = 112,373.76/x
  3. Step 3: Cross multiply
    203,011.50x = 280,156.49 × 112,373.76
  4. Step 4: Simplify right side
    203,011.50x = 31,482,238,169.70
  5. Step 5: Solve for x
    x = 31,482,238,169.70/203,011.50
  6. Step 6: Final answer
    x = 155,076.13

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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.