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Finding the Fourth Proportional to 118,974, 164,176.44 and 65,247.60

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Solution

The fourth proportional to 118,974, 164,176.44 and 65,247.60 is: 90,037.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,974 : 164,176.44 = 65,247.60 : x
  2. Step 2: Convert to fraction form
    118,974/164,176.44 = 65,247.60/x
  3. Step 3: Cross multiply
    118,974x = 164,176.44 × 65,247.60
  4. Step 4: Simplify right side
    118,974x = 10,712,118,686.54
  5. Step 5: Solve for x
    x = 10,712,118,686.54/118,974
  6. Step 6: Final answer
    x = 90,037.48

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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.