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Finding the Fourth Proportional to 178,987.74, 247,003.02 and 98,420.48

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Solution

The fourth proportional to 178,987.74, 247,003.02 and 98,420.48 is: 135,820.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,987.74 : 247,003.02 = 98,420.48 : x
  2. Step 2: Convert to fraction form
    178,987.74/247,003.02 = 98,420.48/x
  3. Step 3: Cross multiply
    178,987.74x = 247,003.02 × 98,420.48
  4. Step 4: Simplify right side
    178,987.74x = 24,310,155,789.85
  5. Step 5: Solve for x
    x = 24,310,155,789.85/178,987.74
  6. Step 6: Final answer
    x = 135,820.23

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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.