Home / 111,928.68-154,476.32-64,172.70

Finding the Fourth Proportional to 111,928.68, 154,476.32 and 64,172.70

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Solution

The fourth proportional to 111,928.68, 154,476.32 and 64,172.70 is: 88,566.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,928.68 : 154,476.32 = 64,172.70 : x
  2. Step 2: Convert to fraction form
    111,928.68/154,476.32 = 64,172.70/x
  3. Step 3: Cross multiply
    111,928.68x = 154,476.32 × 64,172.70
  4. Step 4: Simplify right side
    111,928.68x = 9,913,162,219.60
  5. Step 5: Solve for x
    x = 9,913,162,219.60/111,928.68
  6. Step 6: Final answer
    x = 88,566.78

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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.