Home / 8,158,105.30-12,246,015.30-5,128,891.60

Finding the Fourth Proportional to 8,158,105.30, 12,246,015.30 and 5,128,891.60

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Solution

The fourth proportional to 8,158,105.30, 12,246,015.30 and 5,128,891.60 is: 7,698,905.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,158,105.30 : 12,246,015.30 = 5,128,891.60 : x
  2. Step 2: Convert to fraction form
    8,158,105.30/12,246,015.30 = 5,128,891.60/x
  3. Step 3: Cross multiply
    8,158,105.30x = 12,246,015.30 × 5,128,891.60
  4. Step 4: Simplify right side
    8,158,105.30x = 62,808,485,005,641.48
  5. Step 5: Solve for x
    x = 62,808,485,005,641.48/8,158,105.30
  6. Step 6: Final answer
    x = 7,698,905.90

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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.