Home / 117,633.87-162,298.89-66,638.43

Finding the Fourth Proportional to 117,633.87, 162,298.89 and 66,638.43

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Solution

The fourth proportional to 117,633.87, 162,298.89 and 66,638.43 is: 91,940.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,633.87 : 162,298.89 = 66,638.43 : x
  2. Step 2: Convert to fraction form
    117,633.87/162,298.89 = 66,638.43/x
  3. Step 3: Cross multiply
    117,633.87x = 162,298.89 × 66,638.43
  4. Step 4: Simplify right side
    117,633.87x = 10,815,343,220.34
  5. Step 5: Solve for x
    x = 10,815,343,220.34/117,633.87
  6. Step 6: Final answer
    x = 91,940.72

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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.