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Finding the Fourth Proportional to 110,947.77, 153,118.62 and 65,640.33

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Solution

The fourth proportional to 110,947.77, 153,118.62 and 65,640.33 is: 90,589.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,947.77 : 153,118.62 = 65,640.33 : x
  2. Step 2: Convert to fraction form
    110,947.77/153,118.62 = 65,640.33/x
  3. Step 3: Cross multiply
    110,947.77x = 153,118.62 × 65,640.33
  4. Step 4: Simplify right side
    110,947.77x = 10,050,756,745.94
  5. Step 5: Solve for x
    x = 10,050,756,745.94/110,947.77
  6. Step 6: Final answer
    x = 90,589.98

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1.5x scale

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.