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Finding the Fourth Proportional to 117,716.50, 162,412.86 and 66,721.06

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Solution

The fourth proportional to 117,716.50, 162,412.86 and 66,721.06 is: 92,054.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,716.50 : 162,412.86 = 66,721.06 : x
  2. Step 2: Convert to fraction form
    117,716.50/162,412.86 = 66,721.06/x
  3. Step 3: Cross multiply
    117,716.50x = 162,412.86 × 66,721.06
  4. Step 4: Simplify right side
    117,716.50x = 10,836,358,176.83
  5. Step 5: Solve for x
    x = 10,836,358,176.83/117,716.50
  6. Step 6: Final answer
    x = 92,054.71

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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.