Home / 119,873,955.88-165,385,563.78-78,038,972.20

Finding the Fourth Proportional to 119,873,955.88, 165,385,563.78 and 78,038,972.20

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Solution

The fourth proportional to 119,873,955.88, 165,385,563.78 and 78,038,972.20 is: 107,667,418.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,873,955.88 : 165,385,563.78 = 78,038,972.20 : x
  2. Step 2: Convert to fraction form
    119,873,955.88/165,385,563.78 = 78,038,972.20/x
  3. Step 3: Cross multiply
    119,873,955.88x = 165,385,563.78 × 78,038,972.20
  4. Step 4: Simplify right side
    119,873,955.88x = 12,906,519,414,108,748
  5. Step 5: Solve for x
    x = 12,906,519,414,108,748/119,873,955.88
  6. Step 6: Final answer
    x = 107,667,418.83

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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.