Home / 118,143.12-177,108.08-80,205.17

Finding the Fourth Proportional to 118,143.12, 177,108.08 and 80,205.17

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Solution

The fourth proportional to 118,143.12, 177,108.08 and 80,205.17 is: 120,235.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,143.12 : 177,108.08 = 80,205.17 : x
  2. Step 2: Convert to fraction form
    118,143.12/177,108.08 = 80,205.17/x
  3. Step 3: Cross multiply
    118,143.12x = 177,108.08 × 80,205.17
  4. Step 4: Simplify right side
    118,143.12x = 14,204,982,378.21
  5. Step 5: Solve for x
    x = 14,204,982,378.21/118,143.12
  6. Step 6: Final answer
    x = 120,235.38

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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.