Home / 129,632.40-194,448.60-121,759.20

Finding the Fourth Proportional to 129,632.40, 194,448.60 and 121,759.20

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Solution

The fourth proportional to 129,632.40, 194,448.60 and 121,759.20 is: 182,638.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,632.40 : 194,448.60 = 121,759.20 : x
  2. Step 2: Convert to fraction form
    129,632.40/194,448.60 = 121,759.20/x
  3. Step 3: Cross multiply
    129,632.40x = 194,448.60 × 121,759.20
  4. Step 4: Simplify right side
    129,632.40x = 23,675,905,977.12
  5. Step 5: Solve for x
    x = 23,675,905,977.12/129,632.40
  6. Step 6: Final answer
    x = 182,638.80

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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.