Home / 137,172,208.20-189,454,754.40-90,338,638.36

Finding the Fourth Proportional to 137,172,208.20, 189,454,754.40 and 90,338,638.36

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Solution

The fourth proportional to 137,172,208.20, 189,454,754.40 and 90,338,638.36 is: 124,770,788.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,172,208.20 : 189,454,754.40 = 90,338,638.36 : x
  2. Step 2: Convert to fraction form
    137,172,208.20/189,454,754.40 = 90,338,638.36/x
  3. Step 3: Cross multiply
    137,172,208.20x = 189,454,754.40 × 90,338,638.36
  4. Step 4: Simplify right side
    137,172,208.20x = 17,115,084,543,324,220
  5. Step 5: Solve for x
    x = 17,115,084,543,324,220/137,172,208.20
  6. Step 6: Final answer
    x = 124,770,788.25

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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.