Home / 209,824,109.51-289,557,550.05-115,736,146.43

Finding the Fourth Proportional to 209,824,109.51, 289,557,550.05 and 115,736,146.43

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Solution

The fourth proportional to 209,824,109.51, 289,557,550.05 and 115,736,146.43 is: 159,716,035.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,824,109.51 : 289,557,550.05 = 115,736,146.43 : x
  2. Step 2: Convert to fraction form
    209,824,109.51/289,557,550.05 = 115,736,146.43/x
  3. Step 3: Cross multiply
    209,824,109.51x = 289,557,550.05 × 115,736,146.43
  4. Step 4: Simplify right side
    209,824,109.51x = 33,512,275,012,498,856
  5. Step 5: Solve for x
    x = 33,512,275,012,498,856/209,824,109.51
  6. Step 6: Final answer
    x = 159,716,035.93

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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.