Home / 90,963.92-136,218-57,583.28

Finding the Fourth Proportional to 90,963.92, 136,218 and 57,583.28

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Solution

The fourth proportional to 90,963.92, 136,218 and 57,583.28 is: 86,230.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,963.92 : 136,218 = 57,583.28 : x
  2. Step 2: Convert to fraction form
    90,963.92/136,218 = 57,583.28/x
  3. Step 3: Cross multiply
    90,963.92x = 136,218 × 57,583.28
  4. Step 4: Simplify right side
    90,963.92x = 7,843,879,235.04
  5. Step 5: Solve for x
    x = 7,843,879,235.04/90,963.92
  6. Step 6: Final answer
    x = 86,230.66

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1.5x scale

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.