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Finding the Fourth Proportional to 117,059.52, 161,352.96 and 91,520.64

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Solution

The fourth proportional to 117,059.52, 161,352.96 and 91,520.64 is: 126,150.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,059.52 : 161,352.96 = 91,520.64 : x
  2. Step 2: Convert to fraction form
    117,059.52/161,352.96 = 91,520.64/x
  3. Step 3: Cross multiply
    117,059.52x = 161,352.96 × 91,520.64
  4. Step 4: Simplify right side
    117,059.52x = 14,767,126,165.09
  5. Step 5: Solve for x
    x = 14,767,126,165.09/117,059.52
  6. Step 6: Final answer
    x = 126,150.58

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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.