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Finding the Fourth Proportional to 245,151.60, 367,727.40 and 78,939.60

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Solution

The fourth proportional to 245,151.60, 367,727.40 and 78,939.60 is: 118,409.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,151.60 : 367,727.40 = 78,939.60 : x
  2. Step 2: Convert to fraction form
    245,151.60/367,727.40 = 78,939.60/x
  3. Step 3: Cross multiply
    245,151.60x = 367,727.40 × 78,939.60
  4. Step 4: Simplify right side
    245,151.60x = 29,028,253,865.04
  5. Step 5: Solve for x
    x = 29,028,253,865.04/245,151.60
  6. Step 6: Final answer
    x = 118,409.40

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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.