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Finding the Fourth Proportional to 104,630.90, 156,946.35 and 73,138.10

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Solution

The fourth proportional to 104,630.90, 156,946.35 and 73,138.10 is: 109,707.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,630.90 : 156,946.35 = 73,138.10 : x
  2. Step 2: Convert to fraction form
    104,630.90/156,946.35 = 73,138.10/x
  3. Step 3: Cross multiply
    104,630.90x = 156,946.35 × 73,138.10
  4. Step 4: Simplify right side
    104,630.90x = 11,478,757,840.94
  5. Step 5: Solve for x
    x = 11,478,757,840.94/104,630.90
  6. Step 6: Final answer
    x = 109,707.15

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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.