Home / 154,391,015.20-213,049,912.08-84,775,908.64

Finding the Fourth Proportional to 154,391,015.20, 213,049,912.08 and 84,775,908.64

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Solution

The fourth proportional to 154,391,015.20, 213,049,912.08 and 84,775,908.64 is: 116,985,433.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,391,015.20 : 213,049,912.08 = 84,775,908.64 : x
  2. Step 2: Convert to fraction form
    154,391,015.20/213,049,912.08 = 84,775,908.64/x
  3. Step 3: Cross multiply
    154,391,015.20x = 213,049,912.08 × 84,775,908.64
  4. Step 4: Simplify right side
    154,391,015.20x = 18,061,499,882,254,112
  5. Step 5: Solve for x
    x = 18,061,499,882,254,112/154,391,015.20
  6. Step 6: Final answer
    x = 116,985,433.76

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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.