Home / 129,486,987.10-194,230,480.65-115,378,212.70

Finding the Fourth Proportional to 129,486,987.10, 194,230,480.65 and 115,378,212.70

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Solution

The fourth proportional to 129,486,987.10, 194,230,480.65 and 115,378,212.70 is: 173,067,319.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,486,987.10 : 194,230,480.65 = 115,378,212.70 : x
  2. Step 2: Convert to fraction form
    129,486,987.10/194,230,480.65 = 115,378,212.70/x
  3. Step 3: Cross multiply
    129,486,987.10x = 194,230,480.65 × 115,378,212.70
  4. Step 4: Simplify right side
    129,486,987.10x = 22,409,965,709,258,936
  5. Step 5: Solve for x
    x = 22,409,965,709,258,936/129,486,987.10
  6. Step 6: Final answer
    x = 173,067,319.05

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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.