Home / 130,121.40-195,047.70-70,831.80

Finding the Fourth Proportional to 130,121.40, 195,047.70 and 70,831.80

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Solution

The fourth proportional to 130,121.40, 195,047.70 and 70,831.80 is: 106,174.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,121.40 : 195,047.70 = 70,831.80 : x
  2. Step 2: Convert to fraction form
    130,121.40/195,047.70 = 70,831.80/x
  3. Step 3: Cross multiply
    130,121.40x = 195,047.70 × 70,831.80
  4. Step 4: Simplify right side
    130,121.40x = 13,815,579,676.86
  5. Step 5: Solve for x
    x = 13,815,579,676.86/130,121.40
  6. Step 6: Final answer
    x = 106,174.54

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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.