Home / 130,121.40-195,203.70-51,238.20

Finding the Fourth Proportional to 130,121.40, 195,203.70 and 51,238.20

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Solution

The fourth proportional to 130,121.40, 195,203.70 and 51,238.20 is: 76,865.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,121.40 : 195,203.70 = 51,238.20 : x
  2. Step 2: Convert to fraction form
    130,121.40/195,203.70 = 51,238.20/x
  3. Step 3: Cross multiply
    130,121.40x = 195,203.70 × 51,238.20
  4. Step 4: Simplify right side
    130,121.40x = 10,001,886,221.34
  5. Step 5: Solve for x
    x = 10,001,886,221.34/130,121.40
  6. Step 6: Final answer
    x = 76,865.81

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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.