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Finding the Fourth Proportional to 130,881.60, 196,468.20 and 71,832.60

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Solution

The fourth proportional to 130,881.60, 196,468.20 and 71,832.60 is: 107,828.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,881.60 : 196,468.20 = 71,832.60 : x
  2. Step 2: Convert to fraction form
    130,881.60/196,468.20 = 71,832.60/x
  3. Step 3: Cross multiply
    130,881.60x = 196,468.20 × 71,832.60
  4. Step 4: Simplify right side
    130,881.60x = 14,112,821,623.32
  5. Step 5: Solve for x
    x = 14,112,821,623.32/130,881.60
  6. Step 6: Final answer
    x = 107,828.92

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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.