Home / 127,929.80-191,739.02-90,500.66

Finding the Fourth Proportional to 127,929.80, 191,739.02 and 90,500.66

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Solution

The fourth proportional to 127,929.80, 191,739.02 and 90,500.66 is: 135,640.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,929.80 : 191,739.02 = 90,500.66 : x
  2. Step 2: Convert to fraction form
    127,929.80/191,739.02 = 90,500.66/x
  3. Step 3: Cross multiply
    127,929.80x = 191,739.02 × 90,500.66
  4. Step 4: Simplify right side
    127,929.80x = 17,352,508,563.35
  5. Step 5: Solve for x
    x = 17,352,508,563.35/127,929.80
  6. Step 6: Final answer
    x = 135,640.87

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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.