Home / 217,913,009.16-300,721,981.14-120,131,364.36

Finding the Fourth Proportional to 217,913,009.16, 300,721,981.14 and 120,131,364.36

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Solution

The fourth proportional to 217,913,009.16, 300,721,981.14 and 120,131,364.36 is: 165,782,401.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,913,009.16 : 300,721,981.14 = 120,131,364.36 : x
  2. Step 2: Convert to fraction form
    217,913,009.16/300,721,981.14 = 120,131,364.36/x
  3. Step 3: Cross multiply
    217,913,009.16x = 300,721,981.14 × 120,131,364.36
  4. Step 4: Simplify right side
    217,913,009.16x = 36,126,141,887,390,384
  5. Step 5: Solve for x
    x = 36,126,141,887,390,384/217,913,009.16
  6. Step 6: Final answer
    x = 165,782,401.09

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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.