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Finding the Fourth Proportional to 178,987.44, 247,003.16 and 98,423.20

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Solution

The fourth proportional to 178,987.44, 247,003.16 and 98,423.20 is: 135,824.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,987.44 : 247,003.16 = 98,423.20 : x
  2. Step 2: Convert to fraction form
    178,987.44/247,003.16 = 98,423.20/x
  3. Step 3: Cross multiply
    178,987.44x = 247,003.16 × 98,423.20
  4. Step 4: Simplify right side
    178,987.44x = 24,310,841,417.31
  5. Step 5: Solve for x
    x = 24,310,841,417.31/178,987.44
  6. Step 6: Final answer
    x = 135,824.29

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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.