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Finding the Fourth Proportional to 123,492.57, 170,419.68 and 66,903.95

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Solution

The fourth proportional to 123,492.57, 170,419.68 and 66,903.95 is: 92,327.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,492.57 : 170,419.68 = 66,903.95 : x
  2. Step 2: Convert to fraction form
    123,492.57/170,419.68 = 66,903.95/x
  3. Step 3: Cross multiply
    123,492.57x = 170,419.68 × 66,903.95
  4. Step 4: Simplify right side
    123,492.57x = 11,401,748,897.64
  5. Step 5: Solve for x
    x = 11,401,748,897.64/123,492.57
  6. Step 6: Final answer
    x = 92,327.41

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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.