Home / 100,209.86-150,120.24-89,562.81

Finding the Fourth Proportional to 100,209.86, 150,120.24 and 89,562.81

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Solution

The fourth proportional to 100,209.86, 150,120.24 and 89,562.81 is: 134,170.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,209.86 : 150,120.24 = 89,562.81 : x
  2. Step 2: Convert to fraction form
    100,209.86/150,120.24 = 89,562.81/x
  3. Step 3: Cross multiply
    100,209.86x = 150,120.24 × 89,562.81
  4. Step 4: Simplify right side
    100,209.86x = 13,445,190,759.36
  5. Step 5: Solve for x
    x = 13,445,190,759.36/100,209.86
  6. Step 6: Final answer
    x = 134,170.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.