Home / 111,906.28-154,429.86-61,604.20

Finding the Fourth Proportional to 111,906.28, 154,429.86 and 61,604.20

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Solution

The fourth proportional to 111,906.28, 154,429.86 and 61,604.20 is: 85,013.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,906.28 : 154,429.86 = 61,604.20 : x
  2. Step 2: Convert to fraction form
    111,906.28/154,429.86 = 61,604.20/x
  3. Step 3: Cross multiply
    111,906.28x = 154,429.86 × 61,604.20
  4. Step 4: Simplify right side
    111,906.28x = 9,513,527,981.41
  5. Step 5: Solve for x
    x = 9,513,527,981.41/111,906.28
  6. Step 6: Final answer
    x = 85,013.35

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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.