Home / 127,712,443.20-191,568,664.80-76,652,116.80

Finding the Fourth Proportional to 127,712,443.20, 191,568,664.80 and 76,652,116.80

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Solution

The fourth proportional to 127,712,443.20, 191,568,664.80 and 76,652,116.80 is: 114,978,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,712,443.20 : 191,568,664.80 = 76,652,116.80 : x
  2. Step 2: Convert to fraction form
    127,712,443.20/191,568,664.80 = 76,652,116.80/x
  3. Step 3: Cross multiply
    127,712,443.20x = 191,568,664.80 × 76,652,116.80
  4. Step 4: Simplify right side
    127,712,443.20x = 14,684,143,669,469,648
  5. Step 5: Solve for x
    x = 14,684,143,669,469,648/127,712,443.20
  6. Step 6: Final answer
    x = 114,978,175.20

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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.