Home / 112,813.08-155,721.06-65,085.48

Finding the Fourth Proportional to 112,813.08, 155,721.06 and 65,085.48

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Solution

The fourth proportional to 112,813.08, 155,721.06 and 65,085.48 is: 89,840.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,813.08 : 155,721.06 = 65,085.48 : x
  2. Step 2: Convert to fraction form
    112,813.08/155,721.06 = 65,085.48/x
  3. Step 3: Cross multiply
    112,813.08x = 155,721.06 × 65,085.48
  4. Step 4: Simplify right side
    112,813.08x = 10,135,179,936.21
  5. Step 5: Solve for x
    x = 10,135,179,936.21/112,813.08
  6. Step 6: Final answer
    x = 89,840.47

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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.