Home / 202,639,768.45-279,780,153.12-128,366,240.11

Finding the Fourth Proportional to 202,639,768.45, 279,780,153.12 and 128,366,240.11

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Solution

The fourth proportional to 202,639,768.45, 279,780,153.12 and 128,366,240.11 is: 177,232,369.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,639,768.45 : 279,780,153.12 = 128,366,240.11 : x
  2. Step 2: Convert to fraction form
    202,639,768.45/279,780,153.12 = 128,366,240.11/x
  3. Step 3: Cross multiply
    202,639,768.45x = 279,780,153.12 × 128,366,240.11
  4. Step 4: Simplify right side
    202,639,768.45x = 35,914,326,313,414,488
  5. Step 5: Solve for x
    x = 35,914,326,313,414,488/202,639,768.45
  6. Step 6: Final answer
    x = 177,232,369.48

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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.