Home / 130,806.06-195,866.54-85,685.48

Finding the Fourth Proportional to 130,806.06, 195,866.54 and 85,685.48

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Solution

The fourth proportional to 130,806.06, 195,866.54 and 85,685.48 is: 128,303.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,806.06 : 195,866.54 = 85,685.48 : x
  2. Step 2: Convert to fraction form
    130,806.06/195,866.54 = 85,685.48/x
  3. Step 3: Cross multiply
    130,806.06x = 195,866.54 × 85,685.48
  4. Step 4: Simplify right side
    130,806.06x = 16,782,919,331.70
  5. Step 5: Solve for x
    x = 16,782,919,331.70/130,806.06
  6. Step 6: Final answer
    x = 128,303.83

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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.