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Finding the Fourth Proportional to 117,402.55, 162,015.50 and 66,414.20

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Solution

The fourth proportional to 117,402.55, 162,015.50 and 66,414.20 is: 91,651.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,402.55 : 162,015.50 = 66,414.20 : x
  2. Step 2: Convert to fraction form
    117,402.55/162,015.50 = 66,414.20/x
  3. Step 3: Cross multiply
    117,402.55x = 162,015.50 × 66,414.20
  4. Step 4: Simplify right side
    117,402.55x = 10,760,129,176.06
  5. Step 5: Solve for x
    x = 10,760,129,176.06/117,402.55
  6. Step 6: Final answer
    x = 91,651.58

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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.