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Finding the Fourth Proportional to 150,419.98, 207,600.30 and 86,756.38

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Solution

The fourth proportional to 150,419.98, 207,600.30 and 86,756.38 is: 119,735.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,419.98 : 207,600.30 = 86,756.38 : x
  2. Step 2: Convert to fraction form
    150,419.98/207,600.30 = 86,756.38/x
  3. Step 3: Cross multiply
    150,419.98x = 207,600.30 × 86,756.38
  4. Step 4: Simplify right side
    150,419.98x = 18,010,650,514.91
  5. Step 5: Solve for x
    x = 18,010,650,514.91/150,419.98
  6. Step 6: Final answer
    x = 119,735.76

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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.