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Finding the Fourth Proportional to 102,742.40, 154,142.40 and 50,153.60

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Solution

The fourth proportional to 102,742.40, 154,142.40 and 50,153.60 is: 75,244.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,742.40 : 154,142.40 = 50,153.60 : x
  2. Step 2: Convert to fraction form
    102,742.40/154,142.40 = 50,153.60/x
  3. Step 3: Cross multiply
    102,742.40x = 154,142.40 × 50,153.60
  4. Step 4: Simplify right side
    102,742.40x = 7,730,796,272.64
  5. Step 5: Solve for x
    x = 7,730,796,272.64/102,742.40
  6. Step 6: Final answer
    x = 75,244.46

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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.