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Finding the Fourth Proportional to 130,009.60, 195,079.20 and 73,892.80

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Solution

The fourth proportional to 130,009.60, 195,079.20 and 73,892.80 is: 110,876.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,009.60 : 195,079.20 = 73,892.80 : x
  2. Step 2: Convert to fraction form
    130,009.60/195,079.20 = 73,892.80/x
  3. Step 3: Cross multiply
    130,009.60x = 195,079.20 × 73,892.80
  4. Step 4: Simplify right side
    130,009.60x = 14,414,948,309.76
  5. Step 5: Solve for x
    x = 14,414,948,309.76/130,009.60
  6. Step 6: Final answer
    x = 110,876.03

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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.