Home / 150,705.20-207,894.64-89,415.68

Finding the Fourth Proportional to 150,705.20, 207,894.64 and 89,415.68

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Solution

The fourth proportional to 150,705.20, 207,894.64 and 89,415.68 is: 123,347.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,705.20 : 207,894.64 = 89,415.68 : x
  2. Step 2: Convert to fraction form
    150,705.20/207,894.64 = 89,415.68/x
  3. Step 3: Cross multiply
    150,705.20x = 207,894.64 × 89,415.68
  4. Step 4: Simplify right side
    150,705.20x = 18,589,040,603.96
  5. Step 5: Solve for x
    x = 18,589,040,603.96/150,705.20
  6. Step 6: Final answer
    x = 123,347.04

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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.