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Finding the Fourth Proportional to 123,492.44, 170,419.85 and 66,903.81

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Solution

The fourth proportional to 123,492.44, 170,419.85 and 66,903.81 is: 92,327.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,492.44 : 170,419.85 = 66,903.81 : x
  2. Step 2: Convert to fraction form
    123,492.44/170,419.85 = 66,903.81/x
  3. Step 3: Cross multiply
    123,492.44x = 170,419.85 × 66,903.81
  4. Step 4: Simplify right side
    123,492.44x = 11,401,736,930.11
  5. Step 5: Solve for x
    x = 11,401,736,930.11/123,492.44
  6. Step 6: Final answer
    x = 92,327.41

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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.