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Finding the Fourth Proportional to 130,809.60, 196,160.64 and 51,912.96

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Solution

The fourth proportional to 130,809.60, 196,160.64 and 51,912.96 is: 77,848.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,809.60 : 196,160.64 = 51,912.96 : x
  2. Step 2: Convert to fraction form
    130,809.60/196,160.64 = 51,912.96/x
  3. Step 3: Cross multiply
    130,809.60x = 196,160.64 × 51,912.96
  4. Step 4: Simplify right side
    130,809.60x = 10,183,279,457.89
  5. Step 5: Solve for x
    x = 10,183,279,457.89/130,809.60
  6. Step 6: Final answer
    x = 77,848.10

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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.