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Finding the Fourth Proportional to 245,107.60, 367,661.40 and 78,895.60

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Solution

The fourth proportional to 245,107.60, 367,661.40 and 78,895.60 is: 118,343.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,107.60 : 367,661.40 = 78,895.60 : x
  2. Step 2: Convert to fraction form
    245,107.60/367,661.40 = 78,895.60/x
  3. Step 3: Cross multiply
    245,107.60x = 367,661.40 × 78,895.60
  4. Step 4: Simplify right side
    245,107.60x = 29,006,866,749.84
  5. Step 5: Solve for x
    x = 29,006,866,749.84/245,107.60
  6. Step 6: Final answer
    x = 118,343.40

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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.