Home / 98,628.20-148,100.70-91,351.40

Finding the Fourth Proportional to 98,628.20, 148,100.70 and 91,351.40

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Solution

The fourth proportional to 98,628.20, 148,100.70 and 91,351.40 is: 137,173.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,628.20 : 148,100.70 = 91,351.40 : x
  2. Step 2: Convert to fraction form
    98,628.20/148,100.70 = 91,351.40/x
  3. Step 3: Cross multiply
    98,628.20x = 148,100.70 × 91,351.40
  4. Step 4: Simplify right side
    98,628.20x = 13,529,206,285.98
  5. Step 5: Solve for x
    x = 13,529,206,285.98/98,628.20
  6. Step 6: Final answer
    x = 137,173.81

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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.