Home / 121,728,998.52-167,888,067.42-107,013,200.40

Finding the Fourth Proportional to 121,728,998.52, 167,888,067.42 and 107,013,200.40

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Solution

The fourth proportional to 121,728,998.52, 167,888,067.42 and 107,013,200.40 is: 147,592,107.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,728,998.52 : 167,888,067.42 = 107,013,200.40 : x
  2. Step 2: Convert to fraction form
    121,728,998.52/167,888,067.42 = 107,013,200.40/x
  3. Step 3: Cross multiply
    121,728,998.52x = 167,888,067.42 × 107,013,200.40
  4. Step 4: Simplify right side
    121,728,998.52x = 17,966,239,403,585,170
  5. Step 5: Solve for x
    x = 17,966,239,403,585,170/121,728,998.52
  6. Step 6: Final answer
    x = 147,592,107.24

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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.