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Finding the Fourth Proportional to 161,081.70, 241,695.45 and 76,809.30

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Solution

The fourth proportional to 161,081.70, 241,695.45 and 76,809.30 is: 115,248.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,081.70 : 241,695.45 = 76,809.30 : x
  2. Step 2: Convert to fraction form
    161,081.70/241,695.45 = 76,809.30/x
  3. Step 3: Cross multiply
    161,081.70x = 241,695.45 × 76,809.30
  4. Step 4: Simplify right side
    161,081.70x = 18,564,458,327.69
  5. Step 5: Solve for x
    x = 18,564,458,327.69/161,081.70
  6. Step 6: Final answer
    x = 115,248.71

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1.5x scale

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.