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Finding the Fourth Proportional to 143,347.82, 197,820.22 and 79,685.06

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Solution

The fourth proportional to 143,347.82, 197,820.22 and 79,685.06 is: 109,965.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,347.82 : 197,820.22 = 79,685.06 : x
  2. Step 2: Convert to fraction form
    143,347.82/197,820.22 = 79,685.06/x
  3. Step 3: Cross multiply
    143,347.82x = 197,820.22 × 79,685.06
  4. Step 4: Simplify right side
    143,347.82x = 15,763,316,099.91
  5. Step 5: Solve for x
    x = 15,763,316,099.91/143,347.82
  6. Step 6: Final answer
    x = 109,965.51

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.