Home / 87,411,350.40-131,117,025.60-78,751,996.80

Finding the Fourth Proportional to 87,411,350.40, 131,117,025.60 and 78,751,996.80

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Solution

The fourth proportional to 87,411,350.40, 131,117,025.60 and 78,751,996.80 is: 118,127,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,411,350.40 : 131,117,025.60 = 78,751,996.80 : x
  2. Step 2: Convert to fraction form
    87,411,350.40/131,117,025.60 = 78,751,996.80/x
  3. Step 3: Cross multiply
    87,411,350.40x = 131,117,025.60 × 78,751,996.80
  4. Step 4: Simplify right side
    87,411,350.40x = 10,325,727,580,476,718
  5. Step 5: Solve for x
    x = 10,325,727,580,476,718/87,411,350.40
  6. Step 6: Final answer
    x = 118,127,995.20

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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.