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Finding the Fourth Proportional to 102,924.40, 154,386.60 and 43,745.20

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Solution

The fourth proportional to 102,924.40, 154,386.60 and 43,745.20 is: 65,617.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,924.40 : 154,386.60 = 43,745.20 : x
  2. Step 2: Convert to fraction form
    102,924.40/154,386.60 = 43,745.20/x
  3. Step 3: Cross multiply
    102,924.40x = 154,386.60 × 43,745.20
  4. Step 4: Simplify right side
    102,924.40x = 6,753,672,694.32
  5. Step 5: Solve for x
    x = 6,753,672,694.32/102,924.40
  6. Step 6: Final answer
    x = 65,617.80

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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.