Home / 158,398,879.78-218,590,939.86-87,839,458.24

Finding the Fourth Proportional to 158,398,879.78, 218,590,939.86 and 87,839,458.24

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Solution

The fourth proportional to 158,398,879.78, 218,590,939.86 and 87,839,458.24 is: 121,218,721.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,398,879.78 : 218,590,939.86 = 87,839,458.24 : x
  2. Step 2: Convert to fraction form
    158,398,879.78/218,590,939.86 = 87,839,458.24/x
  3. Step 3: Cross multiply
    158,398,879.78x = 218,590,939.86 × 87,839,458.24
  4. Step 4: Simplify right side
    158,398,879.78x = 19,200,909,733,474,820
  5. Step 5: Solve for x
    x = 19,200,909,733,474,820/158,398,879.78
  6. Step 6: Final answer
    x = 121,218,721.75

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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.