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Finding the Fourth Proportional to 150,431.44, 207,617.16 and 86,756.56

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Solution

The fourth proportional to 150,431.44, 207,617.16 and 86,756.56 is: 119,736.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,431.44 : 207,617.16 = 86,756.56 : x
  2. Step 2: Convert to fraction form
    150,431.44/207,617.16 = 86,756.56/x
  3. Step 3: Cross multiply
    150,431.44x = 207,617.16 × 86,756.56
  4. Step 4: Simplify right side
    150,431.44x = 18,012,150,598.57
  5. Step 5: Solve for x
    x = 18,012,150,598.57/150,431.44
  6. Step 6: Final answer
    x = 119,736.61

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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.