Home / 127,971.80-191,712.90-68,787.80

Finding the Fourth Proportional to 127,971.80, 191,712.90 and 68,787.80

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Solution

The fourth proportional to 127,971.80, 191,712.90 and 68,787.80 is: 103,050.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,971.80 : 191,712.90 = 68,787.80 : x
  2. Step 2: Convert to fraction form
    127,971.80/191,712.90 = 68,787.80/x
  3. Step 3: Cross multiply
    127,971.80x = 191,712.90 × 68,787.80
  4. Step 4: Simplify right side
    127,971.80x = 13,187,508,622.62
  5. Step 5: Solve for x
    x = 13,187,508,622.62/127,971.80
  6. Step 6: Final answer
    x = 103,050.11

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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.