Home / 127,920.20-191,534.70-100,272.20

Finding the Fourth Proportional to 127,920.20, 191,534.70 and 100,272.20

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Solution

The fourth proportional to 127,920.20, 191,534.70 and 100,272.20 is: 150,137.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,920.20 : 191,534.70 = 100,272.20 : x
  2. Step 2: Convert to fraction form
    127,920.20/191,534.70 = 100,272.20/x
  3. Step 3: Cross multiply
    127,920.20x = 191,534.70 × 100,272.20
  4. Step 4: Simplify right side
    127,920.20x = 19,205,605,745.34
  5. Step 5: Solve for x
    x = 19,205,605,745.34/127,920.20
  6. Step 6: Final answer
    x = 150,137.40

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1.5x scale

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.