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Finding the Fourth Proportional to 107,963.80, 161,880.90 and 55,475.80

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Solution

The fourth proportional to 107,963.80, 161,880.90 and 55,475.80 is: 83,180.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,963.80 : 161,880.90 = 55,475.80 : x
  2. Step 2: Convert to fraction form
    107,963.80/161,880.90 = 55,475.80/x
  3. Step 3: Cross multiply
    107,963.80x = 161,880.90 × 55,475.80
  4. Step 4: Simplify right side
    107,963.80x = 8,980,472,432.22
  5. Step 5: Solve for x
    x = 8,980,472,432.22/107,963.80
  6. Step 6: Final answer
    x = 83,180.40

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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.