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Finding the Fourth Proportional to 155,445.40, 214,514.64 and 88,377.40

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Solution

The fourth proportional to 155,445.40, 214,514.64 and 88,377.40 is: 121,960.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,445.40 : 214,514.64 = 88,377.40 : x
  2. Step 2: Convert to fraction form
    155,445.40/214,514.64 = 88,377.40/x
  3. Step 3: Cross multiply
    155,445.40x = 214,514.64 × 88,377.40
  4. Step 4: Simplify right side
    155,445.40x = 18,958,246,145.14
  5. Step 5: Solve for x
    x = 18,958,246,145.14/155,445.40
  6. Step 6: Final answer
    x = 121,960.81

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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.