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Finding the Fourth Proportional to 123,389,893.88, 170,178,766.30 and 108,473,324.32

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Solution

The fourth proportional to 123,389,893.88, 170,178,766.30 and 108,473,324.32 is: 149,605,903.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,389,893.88 : 170,178,766.30 = 108,473,324.32 : x
  2. Step 2: Convert to fraction form
    123,389,893.88/170,178,766.30 = 108,473,324.32/x
  3. Step 3: Cross multiply
    123,389,893.88x = 170,178,766.30 × 108,473,324.32
  4. Step 4: Simplify right side
    123,389,893.88x = 18,459,856,509,237,388
  5. Step 5: Solve for x
    x = 18,459,856,509,237,388/123,389,893.88
  6. Step 6: Final answer
    x = 149,605,903.12

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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.