Home / 159,571.12-220,154.32-99,120.28

Finding the Fourth Proportional to 159,571.12, 220,154.32 and 99,120.28

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Solution

The fourth proportional to 159,571.12, 220,154.32 and 99,120.28 is: 136,752.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,571.12 : 220,154.32 = 99,120.28 : x
  2. Step 2: Convert to fraction form
    159,571.12/220,154.32 = 99,120.28/x
  3. Step 3: Cross multiply
    159,571.12x = 220,154.32 × 99,120.28
  4. Step 4: Simplify right side
    159,571.12x = 21,821,757,841.61
  5. Step 5: Solve for x
    x = 21,821,757,841.61/159,571.12
  6. Step 6: Final answer
    x = 136,752.55

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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.