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Finding the Fourth Proportional to 245,109.75, 367,664.63 and 78,897.75

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Solution

The fourth proportional to 245,109.75, 367,664.63 and 78,897.75 is: 118,346.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,109.75 : 367,664.63 = 78,897.75 : x
  2. Step 2: Convert to fraction form
    245,109.75/367,664.63 = 78,897.75/x
  3. Step 3: Cross multiply
    245,109.75x = 367,664.63 × 78,897.75
  4. Step 4: Simplify right side
    245,109.75x = 29,007,912,061.58
  5. Step 5: Solve for x
    x = 29,007,912,061.58/245,109.75
  6. Step 6: Final answer
    x = 118,346.63

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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.