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Finding the Fourth Proportional to 117,420.50, 162,055.56 and 65,757.27

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Solution

The fourth proportional to 117,420.50, 162,055.56 and 65,757.27 is: 90,753.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,420.50 : 162,055.56 = 65,757.27 : x
  2. Step 2: Convert to fraction form
    117,420.50/162,055.56 = 65,757.27/x
  3. Step 3: Cross multiply
    117,420.50x = 162,055.56 × 65,757.27
  4. Step 4: Simplify right side
    117,420.50x = 10,656,331,213.92
  5. Step 5: Solve for x
    x = 10,656,331,213.92/117,420.50
  6. Step 6: Final answer
    x = 90,753.58

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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.