Home / 203,031.72-280,180.37-112,385.74

Finding the Fourth Proportional to 203,031.72, 280,180.37 and 112,385.74

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Solution

The fourth proportional to 203,031.72, 280,180.37 and 112,385.74 is: 155,090.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,031.72 : 280,180.37 = 112,385.74 : x
  2. Step 2: Convert to fraction form
    203,031.72/280,180.37 = 112,385.74/x
  3. Step 3: Cross multiply
    203,031.72x = 280,180.37 × 112,385.74
  4. Step 4: Simplify right side
    203,031.72x = 31,488,278,215.92
  5. Step 5: Solve for x
    x = 31,488,278,215.92/203,031.72
  6. Step 6: Final answer
    x = 155,090.44

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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.