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Finding the Fourth Proportional to 108,600.67, 149,868.96 and 66,159.20

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Solution

The fourth proportional to 108,600.67, 149,868.96 and 66,159.20 is: 91,299.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,600.67 : 149,868.96 = 66,159.20 : x
  2. Step 2: Convert to fraction form
    108,600.67/149,868.96 = 66,159.20/x
  3. Step 3: Cross multiply
    108,600.67x = 149,868.96 × 66,159.20
  4. Step 4: Simplify right side
    108,600.67x = 9,915,210,873.10
  5. Step 5: Solve for x
    x = 9,915,210,873.10/108,600.67
  6. Step 6: Final answer
    x = 91,299.72

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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.