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Finding the Fourth Proportional to 161,128.88, 241,719.24 and 67,661.36

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Solution

The fourth proportional to 161,128.88, 241,719.24 and 67,661.36 is: 101,502.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,128.88 : 241,719.24 = 67,661.36 : x
  2. Step 2: Convert to fraction form
    161,128.88/241,719.24 = 67,661.36/x
  3. Step 3: Cross multiply
    161,128.88x = 241,719.24 × 67,661.36
  4. Step 4: Simplify right side
    161,128.88x = 16,355,052,516.57
  5. Step 5: Solve for x
    x = 16,355,052,516.57/161,128.88
  6. Step 6: Final answer
    x = 101,502.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.