Home / 127,686.20-191,529.30-48,759.80

Finding the Fourth Proportional to 127,686.20, 191,529.30 and 48,759.80

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Solution

The fourth proportional to 127,686.20, 191,529.30 and 48,759.80 is: 73,139.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,686.20 : 191,529.30 = 48,759.80 : x
  2. Step 2: Convert to fraction form
    127,686.20/191,529.30 = 48,759.80/x
  3. Step 3: Cross multiply
    127,686.20x = 191,529.30 × 48,759.80
  4. Step 4: Simplify right side
    127,686.20x = 9,338,930,362.14
  5. Step 5: Solve for x
    x = 9,338,930,362.14/127,686.20
  6. Step 6: Final answer
    x = 73,139.70

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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.