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Finding the Fourth Proportional to 117,322.61, 161,904.22 and 66,345.35

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Solution

The fourth proportional to 117,322.61, 161,904.22 and 66,345.35 is: 91,556.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,322.61 : 161,904.22 = 66,345.35 : x
  2. Step 2: Convert to fraction form
    117,322.61/161,904.22 = 66,345.35/x
  3. Step 3: Cross multiply
    117,322.61x = 161,904.22 × 66,345.35
  4. Step 4: Simplify right side
    117,322.61x = 10,741,591,332.86
  5. Step 5: Solve for x
    x = 10,741,591,332.86/117,322.61
  6. Step 6: Final answer
    x = 91,556.02

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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.