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Finding the Fourth Proportional to 170,790.53, 255,978.02 and 120,885.01

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Solution

The fourth proportional to 170,790.53, 255,978.02 and 120,885.01 is: 181,180.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,790.53 : 255,978.02 = 120,885.01 : x
  2. Step 2: Convert to fraction form
    170,790.53/255,978.02 = 120,885.01/x
  3. Step 3: Cross multiply
    170,790.53x = 255,978.02 × 120,885.01
  4. Step 4: Simplify right side
    170,790.53x = 30,943,905,169.75
  5. Step 5: Solve for x
    x = 30,943,905,169.75/170,790.53
  6. Step 6: Final answer
    x = 181,180.46

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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.