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Finding the Fourth Proportional to 203,038.68, 280,189.99 and 112,392.73

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Solution

The fourth proportional to 203,038.68, 280,189.99 and 112,392.73 is: 155,100.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,038.68 : 280,189.99 = 112,392.73 : x
  2. Step 2: Convert to fraction form
    203,038.68/280,189.99 = 112,392.73/x
  3. Step 3: Cross multiply
    203,038.68x = 280,189.99 × 112,392.73
  4. Step 4: Simplify right side
    203,038.68x = 31,491,315,931.86
  5. Step 5: Solve for x
    x = 31,491,315,931.86/203,038.68
  6. Step 6: Final answer
    x = 155,100.08

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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.