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Finding the Fourth Proportional to 117,942.21, 162,763.20 and 64,230.21

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Solution

The fourth proportional to 117,942.21, 162,763.20 and 64,230.21 is: 88,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,942.21 : 162,763.20 = 64,230.21 : x
  2. Step 2: Convert to fraction form
    117,942.21/162,763.20 = 64,230.21/x
  3. Step 3: Cross multiply
    117,942.21x = 162,763.20 × 64,230.21
  4. Step 4: Simplify right side
    117,942.21x = 10,454,314,516.27
  5. Step 5: Solve for x
    x = 10,454,314,516.27/117,942.21
  6. Step 6: Final answer
    x = 88,639.30

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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.