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Finding the Fourth Proportional to 118,405.90, 177,455.75 and 88,589.80

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Solution

The fourth proportional to 118,405.90, 177,455.75 and 88,589.80 is: 132,770.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,405.90 : 177,455.75 = 88,589.80 : x
  2. Step 2: Convert to fraction form
    118,405.90/177,455.75 = 88,589.80/x
  3. Step 3: Cross multiply
    118,405.90x = 177,455.75 × 88,589.80
  4. Step 4: Simplify right side
    118,405.90x = 15,720,768,514.07
  5. Step 5: Solve for x
    x = 15,720,768,514.07/118,405.90
  6. Step 6: Final answer
    x = 132,770.15

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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.