Home / 209,112,115.80-313,742,823.30-87,980,698.20

Finding the Fourth Proportional to 209,112,115.80, 313,742,823.30 and 87,980,698.20

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Solution

The fourth proportional to 209,112,115.80, 313,742,823.30 and 87,980,698.20 is: 132,002,454.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,112,115.80 : 313,742,823.30 = 87,980,698.20 : x
  2. Step 2: Convert to fraction form
    209,112,115.80/313,742,823.30 = 87,980,698.20/x
  3. Step 3: Cross multiply
    209,112,115.80x = 313,742,823.30 × 87,980,698.20
  4. Step 4: Simplify right side
    209,112,115.80x = 27,603,312,649,173,232
  5. Step 5: Solve for x
    x = 27,603,312,649,173,232/209,112,115.80
  6. Step 6: Final answer
    x = 132,002,454.97

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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.