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Finding the Fourth Proportional to 130,262.69, 179,781.84 and 82,520.48

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Solution

The fourth proportional to 130,262.69, 179,781.84 and 82,520.48 is: 113,890.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,262.69 : 179,781.84 = 82,520.48 : x
  2. Step 2: Convert to fraction form
    130,262.69/179,781.84 = 82,520.48/x
  3. Step 3: Cross multiply
    130,262.69x = 179,781.84 × 82,520.48
  4. Step 4: Simplify right side
    130,262.69x = 14,835,682,833.17
  5. Step 5: Solve for x
    x = 14,835,682,833.17/130,262.69
  6. Step 6: Final answer
    x = 113,890.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.