Home / 208,542,847.20-312,926,245.20-87,386,546.40

Finding the Fourth Proportional to 208,542,847.20, 312,926,245.20 and 87,386,546.40

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Solution

The fourth proportional to 208,542,847.20, 312,926,245.20 and 87,386,546.40 is: 131,126,740.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,542,847.20 : 312,926,245.20 = 87,386,546.40 : x
  2. Step 2: Convert to fraction form
    208,542,847.20/312,926,245.20 = 87,386,546.40/x
  3. Step 3: Cross multiply
    208,542,847.20x = 312,926,245.20 × 87,386,546.40
  4. Step 4: Simplify right side
    208,542,847.20x = 27,345,543,845,947,580
  5. Step 5: Solve for x
    x = 27,345,543,845,947,580/208,542,847.20
  6. Step 6: Final answer
    x = 131,126,740.68

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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.