Home / 117,889.12-162,687.36-64,174.60

Finding the Fourth Proportional to 117,889.12, 162,687.36 and 64,174.60

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Solution

The fourth proportional to 117,889.12, 162,687.36 and 64,174.60 is: 88,561.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,889.12 : 162,687.36 = 64,174.60 : x
  2. Step 2: Convert to fraction form
    117,889.12/162,687.36 = 64,174.60/x
  3. Step 3: Cross multiply
    117,889.12x = 162,687.36 × 64,174.60
  4. Step 4: Simplify right side
    117,889.12x = 10,440,396,253.06
  5. Step 5: Solve for x
    x = 10,440,396,253.06/117,889.12
  6. Step 6: Final answer
    x = 88,561.15

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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.