Home / 116,721.09-161,027.87-74,271.69

Finding the Fourth Proportional to 116,721.09, 161,027.87 and 74,271.69

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Solution

The fourth proportional to 116,721.09, 161,027.87 and 74,271.69 is: 102,464.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,721.09 : 161,027.87 = 74,271.69 : x
  2. Step 2: Convert to fraction form
    116,721.09/161,027.87 = 74,271.69/x
  3. Step 3: Cross multiply
    116,721.09x = 161,027.87 × 74,271.69
  4. Step 4: Simplify right side
    116,721.09x = 11,959,811,670.64
  5. Step 5: Solve for x
    x = 11,959,811,670.64/116,721.09
  6. Step 6: Final answer
    x = 102,464.87

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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.