Home / 203,125,805.78-304,592,658.31-78,686,715.89

Finding the Fourth Proportional to 203,125,805.78, 304,592,658.31 and 78,686,715.89

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Solution

The fourth proportional to 203,125,805.78, 304,592,658.31 and 78,686,715.89 is: 117,992,865.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,125,805.78 : 304,592,658.31 = 78,686,715.89 : x
  2. Step 2: Convert to fraction form
    203,125,805.78/304,592,658.31 = 78,686,715.89/x
  3. Step 3: Cross multiply
    203,125,805.78x = 304,592,658.31 × 78,686,715.89
  4. Step 4: Simplify right side
    203,125,805.78x = 23,967,395,967,183,584
  5. Step 5: Solve for x
    x = 23,967,395,967,183,584/203,125,805.78
  6. Step 6: Final answer
    x = 117,992,865.92

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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.