Home / 143,235,611,616.13-197,665,758,554.87-78,131,457,686.64

Finding the Fourth Proportional to 143,235,611,616.13, 197,665,758,554.87 and 78,131,457,686.64

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Solution

The fourth proportional to 143,235,611,616.13, 197,665,758,554.87 and 78,131,457,686.64 is: 107,821,746,815.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,235,611,616.13 : 197,665,758,554.87 = 78,131,457,686.64 : x
  2. Step 2: Convert to fraction form
    143,235,611,616.13/197,665,758,554.87 = 78,131,457,686.64/x
  3. Step 3: Cross multiply
    143,235,611,616.13x = 197,665,758,554.87 × 78,131,457,686.64
  4. Step 4: Simplify right side
    143,235,611,616.13x = 15,443,913,850,626,433,351,680
  5. Step 5: Solve for x
    x = 15,443,913,850,626,433,351,680/143,235,611,616.13
  6. Step 6: Final answer
    x = 107,821,746,815.42

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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.