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Finding the Fourth Proportional to 123,492.45, 170,419.50 and 66,903.82

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Solution

The fourth proportional to 123,492.45, 170,419.50 and 66,903.82 is: 92,327.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,492.45 : 170,419.50 = 66,903.82 : x
  2. Step 2: Convert to fraction form
    123,492.45/170,419.50 = 66,903.82/x
  3. Step 3: Cross multiply
    123,492.45x = 170,419.50 × 66,903.82
  4. Step 4: Simplify right side
    123,492.45x = 11,401,715,552.49
  5. Step 5: Solve for x
    x = 11,401,715,552.49/123,492.45
  6. Step 6: Final answer
    x = 92,327.23

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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.