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Finding the Fourth Proportional to 108,684, 150,234.96 and 90,673.92

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Solution

The fourth proportional to 108,684, 150,234.96 and 90,673.92 is: 125,339.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,684 : 150,234.96 = 90,673.92 : x
  2. Step 2: Convert to fraction form
    108,684/150,234.96 = 90,673.92/x
  3. Step 3: Cross multiply
    108,684x = 150,234.96 × 90,673.92
  4. Step 4: Simplify right side
    108,684x = 13,622,392,744.24
  5. Step 5: Solve for x
    x = 13,622,392,744.24/108,684
  6. Step 6: Final answer
    x = 125,339.45

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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.