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Finding the Fourth Proportional to 117,395.68, 161,826.27 and 71,989.47

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Solution

The fourth proportional to 117,395.68, 161,826.27 and 71,989.47 is: 99,235.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,395.68 : 161,826.27 = 71,989.47 : x
  2. Step 2: Convert to fraction form
    117,395.68/161,826.27 = 71,989.47/x
  3. Step 3: Cross multiply
    117,395.68x = 161,826.27 × 71,989.47
  4. Step 4: Simplify right side
    117,395.68x = 11,649,787,409.38
  5. Step 5: Solve for x
    x = 11,649,787,409.38/117,395.68
  6. Step 6: Final answer
    x = 99,235.23

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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.