Home / 8,085,486.20-12,128,229.30-7,424,137.40

Finding the Fourth Proportional to 8,085,486.20, 12,128,229.30 and 7,424,137.40

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Solution

The fourth proportional to 8,085,486.20, 12,128,229.30 and 7,424,137.40 is: 11,136,206.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085,486.20 : 12,128,229.30 = 7,424,137.40 : x
  2. Step 2: Convert to fraction form
    8,085,486.20/12,128,229.30 = 7,424,137.40/x
  3. Step 3: Cross multiply
    8,085,486.20x = 12,128,229.30 × 7,424,137.40
  4. Step 4: Simplify right side
    8,085,486.20x = 90,041,640,741,905.83
  5. Step 5: Solve for x
    x = 90,041,640,741,905.83/8,085,486.20
  6. Step 6: Final answer
    x = 11,136,206.10

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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.