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Finding the Fourth Proportional to 113,880.20, 170,893.20 and 66,495.20

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Solution

The fourth proportional to 113,880.20, 170,893.20 and 66,495.20 is: 99,785.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,880.20 : 170,893.20 = 66,495.20 : x
  2. Step 2: Convert to fraction form
    113,880.20/170,893.20 = 66,495.20/x
  3. Step 3: Cross multiply
    113,880.20x = 170,893.20 × 66,495.20
  4. Step 4: Simplify right side
    113,880.20x = 11,363,577,512.64
  5. Step 5: Solve for x
    x = 11,363,577,512.64/113,880.20
  6. Step 6: Final answer
    x = 99,785.37

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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.