Home / 78,146.73-117,220.14-18,982.35

Finding the Fourth Proportional to 78,146.73, 117,220.14 and 18,982.35

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Solution

The fourth proportional to 78,146.73, 117,220.14 and 18,982.35 is: 28,473.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,146.73 : 117,220.14 = 18,982.35 : x
  2. Step 2: Convert to fraction form
    78,146.73/117,220.14 = 18,982.35/x
  3. Step 3: Cross multiply
    78,146.73x = 117,220.14 × 18,982.35
  4. Step 4: Simplify right side
    78,146.73x = 2,225,113,724.53
  5. Step 5: Solve for x
    x = 2,225,113,724.53/78,146.73
  6. Step 6: Final answer
    x = 28,473.54

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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.