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Finding the Fourth Proportional to 108,599.09, 149,866.54 and 66,157.62

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Solution

The fourth proportional to 108,599.09, 149,866.54 and 66,157.62 is: 91,297.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,599.09 : 149,866.54 = 66,157.62 : x
  2. Step 2: Convert to fraction form
    108,599.09/149,866.54 = 66,157.62/x
  3. Step 3: Cross multiply
    108,599.09x = 149,866.54 × 66,157.62
  4. Step 4: Simplify right side
    108,599.09x = 9,914,812,876.64
  5. Step 5: Solve for x
    x = 9,914,812,876.64/108,599.09
  6. Step 6: Final answer
    x = 91,297.39

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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.