Home / 111,211,123.82-166,844,471.22-78,485,590.35

Finding the Fourth Proportional to 111,211,123.82, 166,844,471.22 and 78,485,590.35

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Solution

The fourth proportional to 111,211,123.82, 166,844,471.22 and 78,485,590.35 is: 117,747,994.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,211,123.82 : 166,844,471.22 = 78,485,590.35 : x
  2. Step 2: Convert to fraction form
    111,211,123.82/166,844,471.22 = 78,485,590.35/x
  3. Step 3: Cross multiply
    111,211,123.82x = 166,844,471.22 × 78,485,590.35
  4. Step 4: Simplify right side
    111,211,123.82x = 13,094,886,820,335,284
  5. Step 5: Solve for x
    x = 13,094,886,820,335,284/111,211,123.82
  6. Step 6: Final answer
    x = 117,747,994.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.