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Finding the Fourth Proportional to 104,533.60, 156,735.60 and 60,138.40

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Solution

The fourth proportional to 104,533.60, 156,735.60 and 60,138.40 is: 90,170.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,533.60 : 156,735.60 = 60,138.40 : x
  2. Step 2: Convert to fraction form
    104,533.60/156,735.60 = 60,138.40/x
  3. Step 3: Cross multiply
    104,533.60x = 156,735.60 × 60,138.40
  4. Step 4: Simplify right side
    104,533.60x = 9,425,828,207.04
  5. Step 5: Solve for x
    x = 9,425,828,207.04/104,533.60
  6. Step 6: Final answer
    x = 90,170.32

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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.