Home / 143,990,336.10-198,732,529.98-81,285,546.90

Finding the Fourth Proportional to 143,990,336.10, 198,732,529.98 and 81,285,546.90

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Solution

The fourth proportional to 143,990,336.10, 198,732,529.98 and 81,285,546.90 is: 112,188,656.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,990,336.10 : 198,732,529.98 = 81,285,546.90 : x
  2. Step 2: Convert to fraction form
    143,990,336.10/198,732,529.98 = 81,285,546.90/x
  3. Step 3: Cross multiply
    143,990,336.10x = 198,732,529.98 × 81,285,546.90
  4. Step 4: Simplify right side
    143,990,336.10x = 16,154,082,386,244,946
  5. Step 5: Solve for x
    x = 16,154,082,386,244,946/143,990,336.10
  6. Step 6: Final answer
    x = 112,188,656.71

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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.