Home / 127,650.21-191,246.90-71,424.87

Finding the Fourth Proportional to 127,650.21, 191,246.90 and 71,424.87

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Solution

The fourth proportional to 127,650.21, 191,246.90 and 71,424.87 is: 107,009.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,650.21 : 191,246.90 = 71,424.87 : x
  2. Step 2: Convert to fraction form
    127,650.21/191,246.90 = 71,424.87/x
  3. Step 3: Cross multiply
    127,650.21x = 191,246.90 × 71,424.87
  4. Step 4: Simplify right side
    127,650.21x = 13,659,784,613.28
  5. Step 5: Solve for x
    x = 13,659,784,613.28/127,650.21
  6. Step 6: Final answer
    x = 107,009.50

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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.