Home / 143,235,611,369.23-197,665,758,214.18-78,131,457,439.87

Finding the Fourth Proportional to 143,235,611,369.23, 197,665,758,214.18 and 78,131,457,439.87

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Solution

The fourth proportional to 143,235,611,369.23, 197,665,758,214.18 and 78,131,457,439.87 is: 107,821,746,474.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,235,611,369.23 : 197,665,758,214.18 = 78,131,457,439.87 : x
  2. Step 2: Convert to fraction form
    143,235,611,369.23/197,665,758,214.18 = 78,131,457,439.87/x
  3. Step 3: Cross multiply
    143,235,611,369.23x = 197,665,758,214.18 × 78,131,457,439.87
  4. Step 4: Simplify right side
    143,235,611,369.23x = 15,443,913,775,229,851,140,096
  5. Step 5: Solve for x
    x = 15,443,913,775,229,851,140,096/143,235,611,369.23
  6. Step 6: Final answer
    x = 107,821,746,474.90

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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.