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Finding the Fourth Proportional to 181,661.17, 272,510.34 and 69,435.85

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Solution

The fourth proportional to 181,661.17, 272,510.34 and 69,435.85 is: 104,160.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,661.17 : 272,510.34 = 69,435.85 : x
  2. Step 2: Convert to fraction form
    181,661.17/272,510.34 = 69,435.85/x
  3. Step 3: Cross multiply
    181,661.17x = 272,510.34 × 69,435.85
  4. Step 4: Simplify right side
    181,661.17x = 18,921,986,744.51
  5. Step 5: Solve for x
    x = 18,921,986,744.51/181,661.17
  6. Step 6: Final answer
    x = 104,160.88

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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.