Home / 131,679,756.64-181,781,076.72-87,699,944.80

Finding the Fourth Proportional to 131,679,756.64, 181,781,076.72 and 87,699,944.80

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Solution

The fourth proportional to 131,679,756.64, 181,781,076.72 and 87,699,944.80 is: 121,067,890.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,679,756.64 : 181,781,076.72 = 87,699,944.80 : x
  2. Step 2: Convert to fraction form
    131,679,756.64/181,781,076.72 = 87,699,944.80/x
  3. Step 3: Cross multiply
    131,679,756.64x = 181,781,076.72 × 87,699,944.80
  4. Step 4: Simplify right side
    131,679,756.64x = 15,942,190,394,028,564
  5. Step 5: Solve for x
    x = 15,942,190,394,028,564/131,679,756.64
  6. Step 6: Final answer
    x = 121,067,890.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.