Home / 150,758.82-208,031.76-87,117.12

Finding the Fourth Proportional to 150,758.82, 208,031.76 and 87,117.12

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Solution

The fourth proportional to 150,758.82, 208,031.76 and 87,117.12 is: 120,212.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,758.82 : 208,031.76 = 87,117.12 : x
  2. Step 2: Convert to fraction form
    150,758.82/208,031.76 = 87,117.12/x
  3. Step 3: Cross multiply
    150,758.82x = 208,031.76 × 87,117.12
  4. Step 4: Simplify right side
    150,758.82x = 18,123,127,799.73
  5. Step 5: Solve for x
    x = 18,123,127,799.73/150,758.82
  6. Step 6: Final answer
    x = 120,212.72

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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.