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Finding the Fourth Proportional to 117,366.74, 161,904.12 and 72,053.72

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Solution

The fourth proportional to 117,366.74, 161,904.12 and 72,053.72 is: 99,396.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,366.74 : 161,904.12 = 72,053.72 : x
  2. Step 2: Convert to fraction form
    117,366.74/161,904.12 = 72,053.72/x
  3. Step 3: Cross multiply
    117,366.74x = 161,904.12 × 72,053.72
  4. Step 4: Simplify right side
    117,366.74x = 11,665,794,129.33
  5. Step 5: Solve for x
    x = 11,665,794,129.33/117,366.74
  6. Step 6: Final answer
    x = 99,396.08

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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.