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Finding the Fourth Proportional to 160,042.14, 240,213.87 and 81,212.94

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Solution

The fourth proportional to 160,042.14, 240,213.87 and 81,212.94 is: 121,895.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,042.14 : 240,213.87 = 81,212.94 : x
  2. Step 2: Convert to fraction form
    160,042.14/240,213.87 = 81,212.94/x
  3. Step 3: Cross multiply
    160,042.14x = 240,213.87 × 81,212.94
  4. Step 4: Simplify right side
    160,042.14x = 19,508,474,611.48
  5. Step 5: Solve for x
    x = 19,508,474,611.48/160,042.14
  6. Step 6: Final answer
    x = 121,895.86

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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.