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Finding the Fourth Proportional to 112,311.70, 168,483.88 and 45,755.89

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Solution

The fourth proportional to 112,311.70, 168,483.88 and 45,755.89 is: 68,640.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,311.70 : 168,483.88 = 45,755.89 : x
  2. Step 2: Convert to fraction form
    112,311.70/168,483.88 = 45,755.89/x
  3. Step 3: Cross multiply
    112,311.70x = 168,483.88 × 45,755.89
  4. Step 4: Simplify right side
    112,311.70x = 7,709,129,516.04
  5. Step 5: Solve for x
    x = 7,709,129,516.04/112,311.70
  6. Step 6: Final answer
    x = 68,640.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.