Home / 127,863.12-191,549.15-71,532.51

Finding the Fourth Proportional to 127,863.12, 191,549.15 and 71,532.51

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Solution

The fourth proportional to 127,863.12, 191,549.15 and 71,532.51 is: 107,161.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,863.12 : 191,549.15 = 71,532.51 : x
  2. Step 2: Convert to fraction form
    127,863.12/191,549.15 = 71,532.51/x
  3. Step 3: Cross multiply
    127,863.12x = 191,549.15 × 71,532.51
  4. Step 4: Simplify right side
    127,863.12x = 13,701,991,487.87
  5. Step 5: Solve for x
    x = 13,701,991,487.87/127,863.12
  6. Step 6: Final answer
    x = 107,161.40

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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.