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Finding the Fourth Proportional to 155,393.58, 214,365.51 and 98,103.90

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Solution

The fourth proportional to 155,393.58, 214,365.51 and 98,103.90 is: 135,334.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,393.58 : 214,365.51 = 98,103.90 : x
  2. Step 2: Convert to fraction form
    155,393.58/214,365.51 = 98,103.90/x
  3. Step 3: Cross multiply
    155,393.58x = 214,365.51 × 98,103.90
  4. Step 4: Simplify right side
    155,393.58x = 21,030,092,556.49
  5. Step 5: Solve for x
    x = 21,030,092,556.49/155,393.58
  6. Step 6: Final answer
    x = 135,334.37

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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.