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Finding the Fourth Proportional to 108,600.59, 149,868.61 and 66,159.12

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Solution

The fourth proportional to 108,600.59, 149,868.61 and 66,159.12 is: 91,299.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,600.59 : 149,868.61 = 66,159.12 : x
  2. Step 2: Convert to fraction form
    108,600.59/149,868.61 = 66,159.12/x
  3. Step 3: Cross multiply
    108,600.59x = 149,868.61 × 66,159.12
  4. Step 4: Simplify right side
    108,600.59x = 9,915,175,187.83
  5. Step 5: Solve for x
    x = 9,915,175,187.83/108,600.59
  6. Step 6: Final answer
    x = 91,299.46

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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.