Home / 130,012.40-195,040.20-51,129.20

Finding the Fourth Proportional to 130,012.40, 195,040.20 and 51,129.20

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Solution

The fourth proportional to 130,012.40, 195,040.20 and 51,129.20 is: 76,702.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,012.40 : 195,040.20 = 51,129.20 : x
  2. Step 2: Convert to fraction form
    130,012.40/195,040.20 = 51,129.20/x
  3. Step 3: Cross multiply
    130,012.40x = 195,040.20 × 51,129.20
  4. Step 4: Simplify right side
    130,012.40x = 9,972,249,393.84
  5. Step 5: Solve for x
    x = 9,972,249,393.84/130,012.40
  6. Step 6: Final answer
    x = 76,702.29

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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.