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Finding the Fourth Proportional to 117,617.01, 162,299.76 and 66,619.59

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Solution

The fourth proportional to 117,617.01, 162,299.76 and 66,619.59 is: 91,928.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,617.01 : 162,299.76 = 66,619.59 : x
  2. Step 2: Convert to fraction form
    117,617.01/162,299.76 = 66,619.59/x
  3. Step 3: Cross multiply
    117,617.01x = 162,299.76 × 66,619.59
  4. Step 4: Simplify right side
    117,617.01x = 10,812,343,468.30
  5. Step 5: Solve for x
    x = 10,812,343,468.30/117,617.01
  6. Step 6: Final answer
    x = 91,928.40

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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.