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Finding the Fourth Proportional to 118,127.80, 177,191.70 and 55,919.80

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Solution

The fourth proportional to 118,127.80, 177,191.70 and 55,919.80 is: 83,879.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,127.80 : 177,191.70 = 55,919.80 : x
  2. Step 2: Convert to fraction form
    118,127.80/177,191.70 = 55,919.80/x
  3. Step 3: Cross multiply
    118,127.80x = 177,191.70 × 55,919.80
  4. Step 4: Simplify right side
    118,127.80x = 9,908,524,425.66
  5. Step 5: Solve for x
    x = 9,908,524,425.66/118,127.80
  6. Step 6: Final answer
    x = 83,879.70

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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.