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Finding the Fourth Proportional to 240,875.78, 361,173.62 and 91,127.79

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Solution

The fourth proportional to 240,875.78, 361,173.62 and 91,127.79 is: 136,638.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,875.78 : 361,173.62 = 91,127.79 : x
  2. Step 2: Convert to fraction form
    240,875.78/361,173.62 = 91,127.79/x
  3. Step 3: Cross multiply
    240,875.78x = 361,173.62 × 91,127.79
  4. Step 4: Simplify right side
    240,875.78x = 32,912,954,024.72
  5. Step 5: Solve for x
    x = 32,912,954,024.72/240,875.78
  6. Step 6: Final answer
    x = 136,638.71

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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.