Home / 130,726.20-195,992.10-71,628.60

Finding the Fourth Proportional to 130,726.20, 195,992.10 and 71,628.60

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Solution

The fourth proportional to 130,726.20, 195,992.10 and 71,628.60 is: 107,389.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,726.20 : 195,992.10 = 71,628.60 : x
  2. Step 2: Convert to fraction form
    130,726.20/195,992.10 = 71,628.60/x
  3. Step 3: Cross multiply
    130,726.20x = 195,992.10 × 71,628.60
  4. Step 4: Simplify right side
    130,726.20x = 14,038,639,734.06
  5. Step 5: Solve for x
    x = 14,038,639,734.06/130,726.20
  6. Step 6: Final answer
    x = 107,389.64

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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.