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Finding the Fourth Proportional to 108,431.50, 149,636.22 and 60,689.26

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Solution

The fourth proportional to 108,431.50, 149,636.22 and 60,689.26 is: 83,751.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,431.50 : 149,636.22 = 60,689.26 : x
  2. Step 2: Convert to fraction form
    108,431.50/149,636.22 = 60,689.26/x
  3. Step 3: Cross multiply
    108,431.50x = 149,636.22 × 60,689.26
  4. Step 4: Simplify right side
    108,431.50x = 9,081,311,461.00
  5. Step 5: Solve for x
    x = 9,081,311,461.00/108,431.50
  6. Step 6: Final answer
    x = 83,751.60

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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.