Home / 130,021.40-194,643.30-122,331.80

Finding the Fourth Proportional to 130,021.40, 194,643.30 and 122,331.80

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Solution

The fourth proportional to 130,021.40, 194,643.30 and 122,331.80 is: 183,131.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,021.40 : 194,643.30 = 122,331.80 : x
  2. Step 2: Convert to fraction form
    130,021.40/194,643.30 = 122,331.80/x
  3. Step 3: Cross multiply
    130,021.40x = 194,643.30 × 122,331.80
  4. Step 4: Simplify right side
    130,021.40x = 23,811,065,246.94
  5. Step 5: Solve for x
    x = 23,811,065,246.94/130,021.40
  6. Step 6: Final answer
    x = 183,131.89

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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.