Home / 98,778.34-148,200.78-31,321.40

Finding the Fourth Proportional to 98,778.34, 148,200.78 and 31,321.40

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Solution

The fourth proportional to 98,778.34, 148,200.78 and 31,321.40 is: 46,992.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,778.34 : 148,200.78 = 31,321.40 : x
  2. Step 2: Convert to fraction form
    98,778.34/148,200.78 = 31,321.40/x
  3. Step 3: Cross multiply
    98,778.34x = 148,200.78 × 31,321.40
  4. Step 4: Simplify right side
    98,778.34x = 4,641,855,910.69
  5. Step 5: Solve for x
    x = 4,641,855,910.69/98,778.34
  6. Step 6: Final answer
    x = 46,992.65

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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.