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Finding the Fourth Proportional to 136,401.74, 204,380.13 and 83,699.90

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Solution

The fourth proportional to 136,401.74, 204,380.13 and 83,699.90 is: 125,413.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,401.74 : 204,380.13 = 83,699.90 : x
  2. Step 2: Convert to fraction form
    136,401.74/204,380.13 = 83,699.90/x
  3. Step 3: Cross multiply
    136,401.74x = 204,380.13 × 83,699.90
  4. Step 4: Simplify right side
    136,401.74x = 17,106,596,442.99
  5. Step 5: Solve for x
    x = 17,106,596,442.99/136,401.74
  6. Step 6: Final answer
    x = 125,413.33

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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.