Home / 130,739.67-195,862.05-77,271.57

Finding the Fourth Proportional to 130,739.67, 195,862.05 and 77,271.57

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Solution

The fourth proportional to 130,739.67, 195,862.05 and 77,271.57 is: 115,761.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,739.67 : 195,862.05 = 77,271.57 : x
  2. Step 2: Convert to fraction form
    130,739.67/195,862.05 = 77,271.57/x
  3. Step 3: Cross multiply
    130,739.67x = 195,862.05 × 77,271.57
  4. Step 4: Simplify right side
    130,739.67x = 15,134,568,106.92
  5. Step 5: Solve for x
    x = 15,134,568,106.92/130,739.67
  6. Step 6: Final answer
    x = 115,761.10

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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.