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Finding the Fourth Proportional to 164,987.40, 247,481.10 and 105,938.40

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Solution

The fourth proportional to 164,987.40, 247,481.10 and 105,938.40 is: 158,907.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,987.40 : 247,481.10 = 105,938.40 : x
  2. Step 2: Convert to fraction form
    164,987.40/247,481.10 = 105,938.40/x
  3. Step 3: Cross multiply
    164,987.40x = 247,481.10 × 105,938.40
  4. Step 4: Simplify right side
    164,987.40x = 26,217,751,764.24
  5. Step 5: Solve for x
    x = 26,217,751,764.24/164,987.40
  6. Step 6: Final answer
    x = 158,907.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.