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Finding the Fourth Proportional to 160,108.91, 240,154.70 and 81,221.07

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Solution

The fourth proportional to 160,108.91, 240,154.70 and 81,221.07 is: 121,827.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,108.91 : 240,154.70 = 81,221.07 : x
  2. Step 2: Convert to fraction form
    160,108.91/240,154.70 = 81,221.07/x
  3. Step 3: Cross multiply
    160,108.91x = 240,154.70 × 81,221.07
  4. Step 4: Simplify right side
    160,108.91x = 19,505,621,293.42
  5. Step 5: Solve for x
    x = 19,505,621,293.42/160,108.91
  6. Step 6: Final answer
    x = 121,827.21

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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.