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Finding the Fourth Proportional to 108,521.11, 149,761.11 and 65,500.66

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Solution

The fourth proportional to 108,521.11, 149,761.11 and 65,500.66 is: 90,392.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,521.11 : 149,761.11 = 65,500.66 : x
  2. Step 2: Convert to fraction form
    108,521.11/149,761.11 = 65,500.66/x
  3. Step 3: Cross multiply
    108,521.11x = 149,761.11 × 65,500.66
  4. Step 4: Simplify right side
    108,521.11x = 9,809,451,547.33
  5. Step 5: Solve for x
    x = 9,809,451,547.33/108,521.11
  6. Step 6: Final answer
    x = 90,392.10

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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.