Home / 117,656.52-162,353.07-66,665.40

Finding the Fourth Proportional to 117,656.52, 162,353.07 and 66,665.40

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Solution

The fourth proportional to 117,656.52, 162,353.07 and 66,665.40 is: 91,990.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,656.52 : 162,353.07 = 66,665.40 : x
  2. Step 2: Convert to fraction form
    117,656.52/162,353.07 = 66,665.40/x
  3. Step 3: Cross multiply
    117,656.52x = 162,353.07 × 66,665.40
  4. Step 4: Simplify right side
    117,656.52x = 10,823,332,352.78
  5. Step 5: Solve for x
    x = 10,823,332,352.78/117,656.52
  6. Step 6: Final answer
    x = 91,990.93

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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.