Home / 111,755.32-154,159.22-66,447.92

Finding the Fourth Proportional to 111,755.32, 154,159.22 and 66,447.92

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Solution

The fourth proportional to 111,755.32, 154,159.22 and 66,447.92 is: 91,660.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,755.32 : 154,159.22 = 66,447.92 : x
  2. Step 2: Convert to fraction form
    111,755.32/154,159.22 = 66,447.92/x
  3. Step 3: Cross multiply
    111,755.32x = 154,159.22 × 66,447.92
  4. Step 4: Simplify right side
    111,755.32x = 10,243,558,913.15
  5. Step 5: Solve for x
    x = 10,243,558,913.15/111,755.32
  6. Step 6: Final answer
    x = 91,660.60

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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.