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Finding the Fourth Proportional to 120,618.84, 166,459.28 and 66,900.24

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Solution

The fourth proportional to 120,618.84, 166,459.28 and 66,900.24 is: 92,325.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,618.84 : 166,459.28 = 66,900.24 : x
  2. Step 2: Convert to fraction form
    120,618.84/166,459.28 = 66,900.24/x
  3. Step 3: Cross multiply
    120,618.84x = 166,459.28 × 66,900.24
  4. Step 4: Simplify right side
    120,618.84x = 11,136,165,782.23
  5. Step 5: Solve for x
    x = 11,136,165,782.23/120,618.84
  6. Step 6: Final answer
    x = 92,325.26

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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.