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Finding the Fourth Proportional to 104,630.80, 156,946.20 and 55,478.80

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Solution

The fourth proportional to 104,630.80, 156,946.20 and 55,478.80 is: 83,218.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,630.80 : 156,946.20 = 55,478.80 : x
  2. Step 2: Convert to fraction form
    104,630.80/156,946.20 = 55,478.80/x
  3. Step 3: Cross multiply
    104,630.80x = 156,946.20 × 55,478.80
  4. Step 4: Simplify right side
    104,630.80x = 8,707,186,840.56
  5. Step 5: Solve for x
    x = 8,707,186,840.56/104,630.80
  6. Step 6: Final answer
    x = 83,218.20

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1.5x scale

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.