Home / 82,032,126.40-123,048,189.60-68,694,731.20

Finding the Fourth Proportional to 82,032,126.40, 123,048,189.60 and 68,694,731.20

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Solution

The fourth proportional to 82,032,126.40, 123,048,189.60 and 68,694,731.20 is: 103,042,096.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,032,126.40 : 123,048,189.60 = 68,694,731.20 : x
  2. Step 2: Convert to fraction form
    82,032,126.40/123,048,189.60 = 68,694,731.20/x
  3. Step 3: Cross multiply
    82,032,126.40x = 123,048,189.60 × 68,694,731.20
  4. Step 4: Simplify right side
    82,032,126.40x = 8,452,762,309,218,635
  5. Step 5: Solve for x
    x = 8,452,762,309,218,635/82,032,126.40
  6. Step 6: Final answer
    x = 103,042,096.80

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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.