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Finding the Fourth Proportional to 108,136.56, 149,294.16 and 74,200.80

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Solution

The fourth proportional to 108,136.56, 149,294.16 and 74,200.80 is: 102,442.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,136.56 : 149,294.16 = 74,200.80 : x
  2. Step 2: Convert to fraction form
    108,136.56/149,294.16 = 74,200.80/x
  3. Step 3: Cross multiply
    108,136.56x = 149,294.16 × 74,200.80
  4. Step 4: Simplify right side
    108,136.56x = 11,077,746,107.33
  5. Step 5: Solve for x
    x = 11,077,746,107.33/108,136.56
  6. Step 6: Final answer
    x = 102,442.19

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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.