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Finding the Fourth Proportional to 150,303.70, 207,371.91 and 86,632.66

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Solution

The fourth proportional to 150,303.70, 207,371.91 and 86,632.66 is: 119,525.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,303.70 : 207,371.91 = 86,632.66 : x
  2. Step 2: Convert to fraction form
    150,303.70/207,371.91 = 86,632.66/x
  3. Step 3: Cross multiply
    150,303.70x = 207,371.91 × 86,632.66
  4. Step 4: Simplify right side
    150,303.70x = 17,965,180,172.58
  5. Step 5: Solve for x
    x = 17,965,180,172.58/150,303.70
  6. Step 6: Final answer
    x = 119,525.87

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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.