Home / 212,906,747.52-319,311,936-97,780,613.76

Finding the Fourth Proportional to 212,906,747.52, 319,311,936 and 97,780,613.76

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Solution

The fourth proportional to 212,906,747.52, 319,311,936 and 97,780,613.76 is: 146,648,790.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,906,747.52 : 319,311,936 = 97,780,613.76 : x
  2. Step 2: Convert to fraction form
    212,906,747.52/319,311,936 = 97,780,613.76/x
  3. Step 3: Cross multiply
    212,906,747.52x = 319,311,936 × 97,780,613.76
  4. Step 4: Simplify right side
    212,906,747.52x = 31,222,517,082,973,840
  5. Step 5: Solve for x
    x = 31,222,517,082,973,840/212,906,747.52
  6. Step 6: Final answer
    x = 146,648,790.83

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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.