Home / 127,631.45-191,447.22-57,428.75

Finding the Fourth Proportional to 127,631.45, 191,447.22 and 57,428.75

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Solution

The fourth proportional to 127,631.45, 191,447.22 and 57,428.75 is: 86,143.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,631.45 : 191,447.22 = 57,428.75 : x
  2. Step 2: Convert to fraction form
    127,631.45/191,447.22 = 57,428.75/x
  3. Step 3: Cross multiply
    127,631.45x = 191,447.22 × 57,428.75
  4. Step 4: Simplify right side
    127,631.45x = 10,994,575,229.55
  5. Step 5: Solve for x
    x = 10,994,575,229.55/127,631.45
  6. Step 6: Final answer
    x = 86,143.15

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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.