Home / 98,515.48-147,991.90-61,103.20

Finding the Fourth Proportional to 98,515.48, 147,991.90 and 61,103.20

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Solution

The fourth proportional to 98,515.48, 147,991.90 and 61,103.20 is: 91,790.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,515.48 : 147,991.90 = 61,103.20 : x
  2. Step 2: Convert to fraction form
    98,515.48/147,991.90 = 61,103.20/x
  3. Step 3: Cross multiply
    98,515.48x = 147,991.90 × 61,103.20
  4. Step 4: Simplify right side
    98,515.48x = 9,042,778,664.08
  5. Step 5: Solve for x
    x = 9,042,778,664.08/98,515.48
  6. Step 6: Final answer
    x = 91,790.43

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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.