Home / 131,679,187.92-181,780,291.92-87,699,376.08

Finding the Fourth Proportional to 131,679,187.92, 181,780,291.92 and 87,699,376.08

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Solution

The fourth proportional to 131,679,187.92, 181,780,291.92 and 87,699,376.08 is: 121,067,105.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,679,187.92 : 181,780,291.92 = 87,699,376.08 : x
  2. Step 2: Convert to fraction form
    131,679,187.92/181,780,291.92 = 87,699,376.08/x
  3. Step 3: Cross multiply
    131,679,187.92x = 181,780,291.92 × 87,699,376.08
  4. Step 4: Simplify right side
    131,679,187.92x = 15,942,018,185,024,264
  5. Step 5: Solve for x
    x = 15,942,018,185,024,264/131,679,187.92
  6. Step 6: Final answer
    x = 121,067,105.87

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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.