Home / 108,121,815.52-149,171,576.88-61,679,396.32

Finding the Fourth Proportional to 108,121,815.52, 149,171,576.88 and 61,679,396.32

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Solution

The fourth proportional to 108,121,815.52, 149,171,576.88 and 61,679,396.32 is: 85,096,728.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,121,815.52 : 149,171,576.88 = 61,679,396.32 : x
  2. Step 2: Convert to fraction form
    108,121,815.52/149,171,576.88 = 61,679,396.32/x
  3. Step 3: Cross multiply
    108,121,815.52x = 149,171,576.88 × 61,679,396.32
  4. Step 4: Simplify right side
    108,121,815.52x = 9,200,812,810,060,868
  5. Step 5: Solve for x
    x = 9,200,812,810,060,868/108,121,815.52
  6. Step 6: Final answer
    x = 85,096,728.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.