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Finding the Fourth Proportional to 155,425.63, 214,468.34 and 98,043.41

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Solution

The fourth proportional to 155,425.63, 214,468.34 and 98,043.41 is: 135,287.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,425.63 : 214,468.34 = 98,043.41 : x
  2. Step 2: Convert to fraction form
    155,425.63/214,468.34 = 98,043.41/x
  3. Step 3: Cross multiply
    155,425.63x = 214,468.34 × 98,043.41
  4. Step 4: Simplify right side
    155,425.63x = 21,027,207,390.64
  5. Step 5: Solve for x
    x = 21,027,207,390.64/155,425.63
  6. Step 6: Final answer
    x = 135,287.90

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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.