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Finding the Fourth Proportional to 123,492.26, 170,420.13 and 66,903.63

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Solution

The fourth proportional to 123,492.26, 170,420.13 and 66,903.63 is: 92,327.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,492.26 : 170,420.13 = 66,903.63 : x
  2. Step 2: Convert to fraction form
    123,492.26/170,420.13 = 66,903.63/x
  3. Step 3: Cross multiply
    123,492.26x = 170,420.13 × 66,903.63
  4. Step 4: Simplify right side
    123,492.26x = 11,401,725,322.07
  5. Step 5: Solve for x
    x = 11,401,725,322.07/123,492.26
  6. Step 6: Final answer
    x = 92,327.45

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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.