Home / 139,589,701.65-209,384,552.48-78,367,698.45

Finding the Fourth Proportional to 139,589,701.65, 209,384,552.48 and 78,367,698.45

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Solution

The fourth proportional to 139,589,701.65, 209,384,552.48 and 78,367,698.45 is: 117,551,547.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,589,701.65 : 209,384,552.48 = 78,367,698.45 : x
  2. Step 2: Convert to fraction form
    139,589,701.65/209,384,552.48 = 78,367,698.45/x
  3. Step 3: Cross multiply
    139,589,701.65x = 209,384,552.48 × 78,367,698.45
  4. Step 4: Simplify right side
    139,589,701.65x = 16,408,985,468,449,002
  5. Step 5: Solve for x
    x = 16,408,985,468,449,002/139,589,701.65
  6. Step 6: Final answer
    x = 117,551,547.68

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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.