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Finding the Fourth Proportional to 130,048.80, 195,073.20 and 51,165.60

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Solution

The fourth proportional to 130,048.80, 195,073.20 and 51,165.60 is: 76,748.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,048.80 : 195,073.20 = 51,165.60 : x
  2. Step 2: Convert to fraction form
    130,048.80/195,073.20 = 51,165.60/x
  3. Step 3: Cross multiply
    130,048.80x = 195,073.20 × 51,165.60
  4. Step 4: Simplify right side
    130,048.80x = 9,981,037,321.92
  5. Step 5: Solve for x
    x = 9,981,037,321.92/130,048.80
  6. Step 6: Final answer
    x = 76,748.40

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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.