Home / 137,203,359.38-205,773,644.70-81,886,813.88

Finding the Fourth Proportional to 137,203,359.38, 205,773,644.70 and 81,886,813.88

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Solution

The fourth proportional to 137,203,359.38, 205,773,644.70 and 81,886,813.88 is: 122,811,483.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,203,359.38 : 205,773,644.70 = 81,886,813.88 : x
  2. Step 2: Convert to fraction form
    137,203,359.38/205,773,644.70 = 81,886,813.88/x
  3. Step 3: Cross multiply
    137,203,359.38x = 205,773,644.70 × 81,886,813.88
  4. Step 4: Simplify right side
    137,203,359.38x = 16,850,148,144,958,146
  5. Step 5: Solve for x
    x = 16,850,148,144,958,146/137,203,359.38
  6. Step 6: Final answer
    x = 122,811,483.78

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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.