Home / 117,203.27-161,730.87-66,220.43

Finding the Fourth Proportional to 117,203.27, 161,730.87 and 66,220.43

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Solution

The fourth proportional to 117,203.27, 161,730.87 and 66,220.43 is: 91,378.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,203.27 : 161,730.87 = 66,220.43 : x
  2. Step 2: Convert to fraction form
    117,203.27/161,730.87 = 66,220.43/x
  3. Step 3: Cross multiply
    117,203.27x = 161,730.87 × 66,220.43
  4. Step 4: Simplify right side
    117,203.27x = 10,709,886,947.02
  5. Step 5: Solve for x
    x = 10,709,886,947.02/117,203.27
  6. Step 6: Final answer
    x = 91,378.74

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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.