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Finding the Fourth Proportional to 245,993.92, 369,029.60 and 86,114.48

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Solution

The fourth proportional to 245,993.92, 369,029.60 and 86,114.48 is: 129,185.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,993.92 : 369,029.60 = 86,114.48 : x
  2. Step 2: Convert to fraction form
    245,993.92/369,029.60 = 86,114.48/x
  3. Step 3: Cross multiply
    245,993.92x = 369,029.60 × 86,114.48
  4. Step 4: Simplify right side
    245,993.92x = 31,778,792,108.61
  5. Step 5: Solve for x
    x = 31,778,792,108.61/245,993.92
  6. Step 6: Final answer
    x = 129,185.27

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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.