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Finding the Fourth Proportional to 245,093.10, 367,639.65 and 78,881.10

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Solution

The fourth proportional to 245,093.10, 367,639.65 and 78,881.10 is: 118,321.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,093.10 : 367,639.65 = 78,881.10 : x
  2. Step 2: Convert to fraction form
    245,093.10/367,639.65 = 78,881.10/x
  3. Step 3: Cross multiply
    245,093.10x = 367,639.65 × 78,881.10
  4. Step 4: Simplify right side
    245,093.10x = 28,999,819,995.62
  5. Step 5: Solve for x
    x = 28,999,819,995.62/245,093.10
  6. Step 6: Final answer
    x = 118,321.65

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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.