Home / 98,942.84-136,558.66-75,029.20

Finding the Fourth Proportional to 98,942.84, 136,558.66 and 75,029.20

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Solution

The fourth proportional to 98,942.84, 136,558.66 and 75,029.20 is: 103,553.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,942.84 : 136,558.66 = 75,029.20 : x
  2. Step 2: Convert to fraction form
    98,942.84/136,558.66 = 75,029.20/x
  3. Step 3: Cross multiply
    98,942.84x = 136,558.66 × 75,029.20
  4. Step 4: Simplify right side
    98,942.84x = 10,245,887,012.87
  5. Step 5: Solve for x
    x = 10,245,887,012.87/98,942.84
  6. Step 6: Final answer
    x = 103,553.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.