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Finding the Fourth Proportional to 155,698, 214,863.48 and 88,630

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Solution

The fourth proportional to 155,698, 214,863.48 and 88,630 is: 122,309.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,698 : 214,863.48 = 88,630 : x
  2. Step 2: Convert to fraction form
    155,698/214,863.48 = 88,630/x
  3. Step 3: Cross multiply
    155,698x = 214,863.48 × 88,630
  4. Step 4: Simplify right side
    155,698x = 19,043,350,232.40
  5. Step 5: Solve for x
    x = 19,043,350,232.40/155,698
  6. Step 6: Final answer
    x = 122,309.54

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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.