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Finding the Fourth Proportional to 130,665.60, 196,015.68 and 41,889.60

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Solution

The fourth proportional to 130,665.60, 196,015.68 and 41,889.60 is: 62,839.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,665.60 : 196,015.68 = 41,889.60 : x
  2. Step 2: Convert to fraction form
    130,665.60/196,015.68 = 41,889.60/x
  3. Step 3: Cross multiply
    130,665.60x = 196,015.68 × 41,889.60
  4. Step 4: Simplify right side
    130,665.60x = 8,211,018,428.93
  5. Step 5: Solve for x
    x = 8,211,018,428.93/130,665.60
  6. Step 6: Final answer
    x = 62,839.94

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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.