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Finding the Fourth Proportional to 155,445.75, 214,515.15 and 88,377.75

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Solution

The fourth proportional to 155,445.75, 214,515.15 and 88,377.75 is: 121,961.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,445.75 : 214,515.15 = 88,377.75 : x
  2. Step 2: Convert to fraction form
    155,445.75/214,515.15 = 88,377.75/x
  3. Step 3: Cross multiply
    155,445.75x = 214,515.15 × 88,377.75
  4. Step 4: Simplify right side
    155,445.75x = 18,958,366,297.91
  5. Step 5: Solve for x
    x = 18,958,366,297.91/155,445.75
  6. Step 6: Final answer
    x = 121,961.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.