Home / 111,726.20-154,195.00-66,403.76

Finding the Fourth Proportional to 111,726.20, 154,195.00 and 66,403.76

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Solution

The fourth proportional to 111,726.20, 154,195.00 and 66,403.76 is: 91,644.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,726.20 : 154,195.00 = 66,403.76 : x
  2. Step 2: Convert to fraction form
    111,726.20/154,195.00 = 66,403.76/x
  3. Step 3: Cross multiply
    111,726.20x = 154,195.00 × 66,403.76
  4. Step 4: Simplify right side
    111,726.20x = 10,239,127,411.54
  5. Step 5: Solve for x
    x = 10,239,127,411.54/111,726.20
  6. Step 6: Final answer
    x = 91,644.82

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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.