Home / 115,205.52-159,028.20-90,063.12

Finding the Fourth Proportional to 115,205.52, 159,028.20 and 90,063.12

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Solution

The fourth proportional to 115,205.52, 159,028.20 and 90,063.12 is: 124,321.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,205.52 : 159,028.20 = 90,063.12 : x
  2. Step 2: Convert to fraction form
    115,205.52/159,028.20 = 90,063.12/x
  3. Step 3: Cross multiply
    115,205.52x = 159,028.20 × 90,063.12
  4. Step 4: Simplify right side
    115,205.52x = 14,322,575,859.98
  5. Step 5: Solve for x
    x = 14,322,575,859.98/115,205.52
  6. Step 6: Final answer
    x = 124,321.96

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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.