Home / 117,689.66-162,419.28-66,011.61

Finding the Fourth Proportional to 117,689.66, 162,419.28 and 66,011.61

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Solution

The fourth proportional to 117,689.66, 162,419.28 and 66,011.61 is: 91,100.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,689.66 : 162,419.28 = 66,011.61 : x
  2. Step 2: Convert to fraction form
    117,689.66/162,419.28 = 66,011.61/x
  3. Step 3: Cross multiply
    117,689.66x = 162,419.28 × 66,011.61
  4. Step 4: Simplify right side
    117,689.66x = 10,721,557,025.69
  5. Step 5: Solve for x
    x = 10,721,557,025.69/117,689.66
  6. Step 6: Final answer
    x = 91,100.25

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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.