Home / 185,922,867.25-278,918,351.31-76,688,449.69

Finding the Fourth Proportional to 185,922,867.25, 278,918,351.31 and 76,688,449.69

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Solution

The fourth proportional to 185,922,867.25, 278,918,351.31 and 76,688,449.69 is: 115,046,719.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,922,867.25 : 278,918,351.31 = 76,688,449.69 : x
  2. Step 2: Convert to fraction form
    185,922,867.25/278,918,351.31 = 76,688,449.69/x
  3. Step 3: Cross multiply
    185,922,867.25x = 278,918,351.31 × 76,688,449.69
  4. Step 4: Simplify right side
    185,922,867.25x = 21,389,815,951,266,304
  5. Step 5: Solve for x
    x = 21,389,815,951,266,304/185,922,867.25
  6. Step 6: Final answer
    x = 115,046,719.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.