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Finding the Fourth Proportional to 130,814.80, 195,784.80 and 91,448.80

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Solution

The fourth proportional to 130,814.80, 195,784.80 and 91,448.80 is: 136,867.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,814.80 : 195,784.80 = 91,448.80 : x
  2. Step 2: Convert to fraction form
    130,814.80/195,784.80 = 91,448.80/x
  3. Step 3: Cross multiply
    130,814.80x = 195,784.80 × 91,448.80
  4. Step 4: Simplify right side
    130,814.80x = 17,904,285,018.24
  5. Step 5: Solve for x
    x = 17,904,285,018.24/130,814.80
  6. Step 6: Final answer
    x = 136,867.43

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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.