Home / 127,399.20-191,137.20-68,263.20

Finding the Fourth Proportional to 127,399.20, 191,137.20 and 68,263.20

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Solution

The fourth proportional to 127,399.20, 191,137.20 and 68,263.20 is: 102,415.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,399.20 : 191,137.20 = 68,263.20 : x
  2. Step 2: Convert to fraction form
    127,399.20/191,137.20 = 68,263.20/x
  3. Step 3: Cross multiply
    127,399.20x = 191,137.20 × 68,263.20
  4. Step 4: Simplify right side
    127,399.20x = 13,047,636,911.04
  5. Step 5: Solve for x
    x = 13,047,636,911.04/127,399.20
  6. Step 6: Final answer
    x = 102,415.38

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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.