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Finding the Fourth Proportional to 108,600.96, 149,869.13 and 66,159.50

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Solution

The fourth proportional to 108,600.96, 149,869.13 and 66,159.50 is: 91,299.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,600.96 : 149,869.13 = 66,159.50 : x
  2. Step 2: Convert to fraction form
    108,600.96/149,869.13 = 66,159.50/x
  3. Step 3: Cross multiply
    108,600.96x = 149,869.13 × 66,159.50
  4. Step 4: Simplify right side
    108,600.96x = 9,915,265,626.09
  5. Step 5: Solve for x
    x = 9,915,265,626.09/108,600.96
  6. Step 6: Final answer
    x = 91,299.98

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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.