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Finding the Fourth Proportional to 108,544.56, 149,670.90 and 68,209.80

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Solution

The fourth proportional to 108,544.56, 149,670.90 and 68,209.80 is: 94,053.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,544.56 : 149,670.90 = 68,209.80 : x
  2. Step 2: Convert to fraction form
    108,544.56/149,670.90 = 68,209.80/x
  3. Step 3: Cross multiply
    108,544.56x = 149,670.90 × 68,209.80
  4. Step 4: Simplify right side
    108,544.56x = 10,209,022,154.82
  5. Step 5: Solve for x
    x = 10,209,022,154.82/108,544.56
  6. Step 6: Final answer
    x = 94,053.74

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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.