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Finding the Fourth Proportional to 117,478.56, 162,081.82 and 66,486.22

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Solution

The fourth proportional to 117,478.56, 162,081.82 and 66,486.22 is: 91,729.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,478.56 : 162,081.82 = 66,486.22 : x
  2. Step 2: Convert to fraction form
    117,478.56/162,081.82 = 66,486.22/x
  3. Step 3: Cross multiply
    117,478.56x = 162,081.82 × 66,486.22
  4. Step 4: Simplify right side
    117,478.56x = 10,776,207,210.09
  5. Step 5: Solve for x
    x = 10,776,207,210.09/117,478.56
  6. Step 6: Final answer
    x = 91,729.14

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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.