Home / 118,139.20-177,208.80-51,611.20

Finding the Fourth Proportional to 118,139.20, 177,208.80 and 51,611.20

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Solution

The fourth proportional to 118,139.20, 177,208.80 and 51,611.20 is: 77,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,139.20 : 177,208.80 = 51,611.20 : x
  2. Step 2: Convert to fraction form
    118,139.20/177,208.80 = 51,611.20/x
  3. Step 3: Cross multiply
    118,139.20x = 177,208.80 × 51,611.20
  4. Step 4: Simplify right side
    118,139.20x = 9,145,958,818.56
  5. Step 5: Solve for x
    x = 9,145,958,818.56/118,139.20
  6. Step 6: Final answer
    x = 77,416.80

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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.