Home / 202,639,775.48-279,780,162.78-128,366,247.14

Finding the Fourth Proportional to 202,639,775.48, 279,780,162.78 and 128,366,247.14

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Solution

The fourth proportional to 202,639,775.48, 279,780,162.78 and 128,366,247.14 is: 177,232,379.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,639,775.48 : 279,780,162.78 = 128,366,247.14 : x
  2. Step 2: Convert to fraction form
    202,639,775.48/279,780,162.78 = 128,366,247.14/x
  3. Step 3: Cross multiply
    202,639,775.48x = 279,780,162.78 × 128,366,247.14
  4. Step 4: Simplify right side
    202,639,775.48x = 35,914,329,520,286,904
  5. Step 5: Solve for x
    x = 35,914,329,520,286,904/202,639,775.48
  6. Step 6: Final answer
    x = 177,232,379.16

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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.