Home / 111,669.81-154,184.79-68,707.11

Finding the Fourth Proportional to 111,669.81, 154,184.79 and 68,707.11

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Solution

The fourth proportional to 111,669.81, 154,184.79 and 68,707.11 is: 94,865.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,669.81 : 154,184.79 = 68,707.11 : x
  2. Step 2: Convert to fraction form
    111,669.81/154,184.79 = 68,707.11/x
  3. Step 3: Cross multiply
    111,669.81x = 154,184.79 × 68,707.11
  4. Step 4: Simplify right side
    111,669.81x = 10,593,591,326.86
  5. Step 5: Solve for x
    x = 10,593,591,326.86/111,669.81
  6. Step 6: Final answer
    x = 94,865.31

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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.