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Finding the Fourth Proportional to 108,744.34, 150,009.19 and 63,405.78

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Solution

The fourth proportional to 108,744.34, 150,009.19 and 63,405.78 is: 87,466.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,744.34 : 150,009.19 = 63,405.78 : x
  2. Step 2: Convert to fraction form
    108,744.34/150,009.19 = 63,405.78/x
  3. Step 3: Cross multiply
    108,744.34x = 150,009.19 × 63,405.78
  4. Step 4: Simplify right side
    108,744.34x = 9,511,449,699.12
  5. Step 5: Solve for x
    x = 9,511,449,699.12/108,744.34
  6. Step 6: Final answer
    x = 87,466.16

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1.5x scale

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.