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Finding the Fourth Proportional to 130,784.60, 196,176.90 and 104,540.60

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Solution

The fourth proportional to 130,784.60, 196,176.90 and 104,540.60 is: 156,810.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,784.60 : 196,176.90 = 104,540.60 : x
  2. Step 2: Convert to fraction form
    130,784.60/196,176.90 = 104,540.60/x
  3. Step 3: Cross multiply
    130,784.60x = 196,176.90 × 104,540.60
  4. Step 4: Simplify right side
    130,784.60x = 20,508,450,832.14
  5. Step 5: Solve for x
    x = 20,508,450,832.14/130,784.60
  6. Step 6: Final answer
    x = 156,810.90

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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.