Home / 131,679,202.96-181,780,312.64-87,699,391.12

Finding the Fourth Proportional to 131,679,202.96, 181,780,312.64 and 87,699,391.12

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Solution

The fourth proportional to 131,679,202.96, 181,780,312.64 and 87,699,391.12 is: 121,067,126.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,679,202.96 : 181,780,312.64 = 87,699,391.12 : x
  2. Step 2: Convert to fraction form
    131,679,202.96/181,780,312.64 = 87,699,391.12/x
  3. Step 3: Cross multiply
    131,679,202.96x = 181,780,312.64 × 87,699,391.12
  4. Step 4: Simplify right side
    131,679,202.96x = 15,942,022,736,131,240
  5. Step 5: Solve for x
    x = 15,942,022,736,131,240/131,679,202.96
  6. Step 6: Final answer
    x = 121,067,126.61

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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.