Home / 117,861.57-162,653.13-66,874.50

Finding the Fourth Proportional to 117,861.57, 162,653.13 and 66,874.50

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Solution

The fourth proportional to 117,861.57, 162,653.13 and 66,874.50 is: 92,289.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,861.57 : 162,653.13 = 66,874.50 : x
  2. Step 2: Convert to fraction form
    117,861.57/162,653.13 = 66,874.50/x
  3. Step 3: Cross multiply
    117,861.57x = 162,653.13 × 66,874.50
  4. Step 4: Simplify right side
    117,861.57x = 10,877,346,742.19
  5. Step 5: Solve for x
    x = 10,877,346,742.19/117,861.57
  6. Step 6: Final answer
    x = 92,289.17

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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.