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Finding the Fourth Proportional to 103,214.40, 154,965.60 and 66,004.80

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Solution

The fourth proportional to 103,214.40, 154,965.60 and 66,004.80 is: 99,099.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,214.40 : 154,965.60 = 66,004.80 : x
  2. Step 2: Convert to fraction form
    103,214.40/154,965.60 = 66,004.80/x
  3. Step 3: Cross multiply
    103,214.40x = 154,965.60 × 66,004.80
  4. Step 4: Simplify right side
    103,214.40x = 10,228,473,434.88
  5. Step 5: Solve for x
    x = 10,228,473,434.88/103,214.40
  6. Step 6: Final answer
    x = 99,099.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.