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Finding the Fourth Proportional to 127,904.80, 191,912.46 and 68,671.30

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Solution

The fourth proportional to 127,904.80, 191,912.46 and 68,671.30 is: 103,036.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,904.80 : 191,912.46 = 68,671.30 : x
  2. Step 2: Convert to fraction form
    127,904.80/191,912.46 = 68,671.30/x
  3. Step 3: Cross multiply
    127,904.80x = 191,912.46 × 68,671.30
  4. Step 4: Simplify right side
    127,904.80x = 13,178,878,114.40
  5. Step 5: Solve for x
    x = 13,178,878,114.40/127,904.80
  6. Step 6: Final answer
    x = 103,036.62

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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.