Home / 118,136.90-177,205.35-80,812.10

Finding the Fourth Proportional to 118,136.90, 177,205.35 and 80,812.10

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Solution

The fourth proportional to 118,136.90, 177,205.35 and 80,812.10 is: 121,218.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,136.90 : 177,205.35 = 80,812.10 : x
  2. Step 2: Convert to fraction form
    118,136.90/177,205.35 = 80,812.10/x
  3. Step 3: Cross multiply
    118,136.90x = 177,205.35 × 80,812.10
  4. Step 4: Simplify right side
    118,136.90x = 14,320,336,464.74
  5. Step 5: Solve for x
    x = 14,320,336,464.74/118,136.90
  6. Step 6: Final answer
    x = 121,218.15

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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.