Home / 140,679,961.70-211,019,942.55-128,138,828.90

Finding the Fourth Proportional to 140,679,961.70, 211,019,942.55 and 128,138,828.90

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Solution

The fourth proportional to 140,679,961.70, 211,019,942.55 and 128,138,828.90 is: 192,208,243.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,679,961.70 : 211,019,942.55 = 128,138,828.90 : x
  2. Step 2: Convert to fraction form
    140,679,961.70/211,019,942.55 = 128,138,828.90/x
  3. Step 3: Cross multiply
    140,679,961.70x = 211,019,942.55 × 128,138,828.90
  4. Step 4: Simplify right side
    140,679,961.70x = 27,039,848,312,902,284
  5. Step 5: Solve for x
    x = 27,039,848,312,902,284/140,679,961.70
  6. Step 6: Final answer
    x = 192,208,243.35

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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.