Home / 217,913,008.16-300,721,979.76-120,131,363.36

Finding the Fourth Proportional to 217,913,008.16, 300,721,979.76 and 120,131,363.36

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Solution

The fourth proportional to 217,913,008.16, 300,721,979.76 and 120,131,363.36 is: 165,782,399.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,913,008.16 : 300,721,979.76 = 120,131,363.36 : x
  2. Step 2: Convert to fraction form
    217,913,008.16/300,721,979.76 = 120,131,363.36/x
  3. Step 3: Cross multiply
    217,913,008.16x = 300,721,979.76 × 120,131,363.36
  4. Step 4: Simplify right side
    217,913,008.16x = 36,126,141,420,887,128
  5. Step 5: Solve for x
    x = 36,126,141,420,887,128/217,913,008.16
  6. Step 6: Final answer
    x = 165,782,399.71

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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.