Home / 98,506.78-147,717.45-54,120.22

Finding the Fourth Proportional to 98,506.78, 147,717.45 and 54,120.22

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Solution

The fourth proportional to 98,506.78, 147,717.45 and 54,120.22 is: 81,156.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,506.78 : 147,717.45 = 54,120.22 : x
  2. Step 2: Convert to fraction form
    98,506.78/147,717.45 = 54,120.22/x
  3. Step 3: Cross multiply
    98,506.78x = 147,717.45 × 54,120.22
  4. Step 4: Simplify right side
    98,506.78x = 7,994,500,891.84
  5. Step 5: Solve for x
    x = 7,994,500,891.84/98,506.78
  6. Step 6: Final answer
    x = 81,156.86

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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.