Home / 131,048,800.38-180,912,819.87-81,505,145.52

Finding the Fourth Proportional to 131,048,800.38, 180,912,819.87 and 81,505,145.52

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Solution

The fourth proportional to 131,048,800.38, 180,912,819.87 and 81,505,145.52 is: 112,517,822.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,048,800.38 : 180,912,819.87 = 81,505,145.52 : x
  2. Step 2: Convert to fraction form
    131,048,800.38/180,912,819.87 = 81,505,145.52/x
  3. Step 3: Cross multiply
    131,048,800.38x = 180,912,819.87 × 81,505,145.52
  4. Step 4: Simplify right side
    131,048,800.38x = 14,745,325,709,937,898
  5. Step 5: Solve for x
    x = 14,745,325,709,937,898/131,048,800.38
  6. Step 6: Final answer
    x = 112,517,822.88

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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.