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Finding the Fourth Proportional to 108,950.90, 150,370.11 and 90,772.84

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Solution

The fourth proportional to 108,950.90, 150,370.11 and 90,772.84 is: 125,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,950.90 : 150,370.11 = 90,772.84 : x
  2. Step 2: Convert to fraction form
    108,950.90/150,370.11 = 90,772.84/x
  3. Step 3: Cross multiply
    108,950.90x = 150,370.11 × 90,772.84
  4. Step 4: Simplify right side
    108,950.90x = 13,649,521,183.96
  5. Step 5: Solve for x
    x = 13,649,521,183.96/108,950.90
  6. Step 6: Final answer
    x = 125,281.40

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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.