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Finding the Fourth Proportional to 107,812.40, 161,411.40 and 104,740.40

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Solution

The fourth proportional to 107,812.40, 161,411.40 and 104,740.40 is: 156,812.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,812.40 : 161,411.40 = 104,740.40 : x
  2. Step 2: Convert to fraction form
    107,812.40/161,411.40 = 104,740.40/x
  3. Step 3: Cross multiply
    107,812.40x = 161,411.40 × 104,740.40
  4. Step 4: Simplify right side
    107,812.40x = 16,906,294,600.56
  5. Step 5: Solve for x
    x = 16,906,294,600.56/107,812.40
  6. Step 6: Final answer
    x = 156,812.15

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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.