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Finding the Fourth Proportional to 117,205.44, 161,703.72 and 66,210.72

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Solution

The fourth proportional to 117,205.44, 161,703.72 and 66,210.72 is: 91,348.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,205.44 : 161,703.72 = 66,210.72 : x
  2. Step 2: Convert to fraction form
    117,205.44/161,703.72 = 66,210.72/x
  3. Step 3: Cross multiply
    117,205.44x = 161,703.72 × 66,210.72
  4. Step 4: Simplify right side
    117,205.44x = 10,706,519,727.88
  5. Step 5: Solve for x
    x = 10,706,519,727.88/117,205.44
  6. Step 6: Final answer
    x = 91,348.32

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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.