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Finding the Fourth Proportional to 161,330.40, 241,880.40 and 91,231.20

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Solution

The fourth proportional to 161,330.40, 241,880.40 and 91,231.20 is: 136,781.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,330.40 : 241,880.40 = 91,231.20 : x
  2. Step 2: Convert to fraction form
    161,330.40/241,880.40 = 91,231.20/x
  3. Step 3: Cross multiply
    161,330.40x = 241,880.40 × 91,231.20
  4. Step 4: Simplify right side
    161,330.40x = 22,067,039,148.48
  5. Step 5: Solve for x
    x = 22,067,039,148.48/161,330.40
  6. Step 6: Final answer
    x = 136,781.66

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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.