Home / 117,057.11-161,510.70-71,115.83

Finding the Fourth Proportional to 117,057.11, 161,510.70 and 71,115.83

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Solution

The fourth proportional to 117,057.11, 161,510.70 and 71,115.83 is: 98,122.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,057.11 : 161,510.70 = 71,115.83 : x
  2. Step 2: Convert to fraction form
    117,057.11/161,510.70 = 71,115.83/x
  3. Step 3: Cross multiply
    117,057.11x = 161,510.70 × 71,115.83
  4. Step 4: Simplify right side
    117,057.11x = 11,485,966,676.83
  5. Step 5: Solve for x
    x = 11,485,966,676.83/117,057.11
  6. Step 6: Final answer
    x = 98,122.76

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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.