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Finding the Fourth Proportional to 181,387.80, 272,081.70 and 70,579.80

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Solution

The fourth proportional to 181,387.80, 272,081.70 and 70,579.80 is: 105,869.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,387.80 : 272,081.70 = 70,579.80 : x
  2. Step 2: Convert to fraction form
    181,387.80/272,081.70 = 70,579.80/x
  3. Step 3: Cross multiply
    181,387.80x = 272,081.70 × 70,579.80
  4. Step 4: Simplify right side
    181,387.80x = 19,203,471,969.66
  5. Step 5: Solve for x
    x = 19,203,471,969.66/181,387.80
  6. Step 6: Final answer
    x = 105,869.70

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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.