Home / 111,991,743.72-154,460,993.04-72,846,020.79

Finding the Fourth Proportional to 111,991,743.72, 154,460,993.04 and 72,846,020.79

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Solution

The fourth proportional to 111,991,743.72, 154,460,993.04 and 72,846,020.79 is: 100,470,519.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,991,743.72 : 154,460,993.04 = 72,846,020.79 : x
  2. Step 2: Convert to fraction form
    111,991,743.72/154,460,993.04 = 72,846,020.79/x
  3. Step 3: Cross multiply
    111,991,743.72x = 154,460,993.04 × 72,846,020.79
  4. Step 4: Simplify right side
    111,991,743.72x = 11,251,868,710,235,886
  5. Step 5: Solve for x
    x = 11,251,868,710,235,886/111,991,743.72
  6. Step 6: Final answer
    x = 100,470,519.85

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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.