Home / 127,315.10-190,948.05-120,992.85

Finding the Fourth Proportional to 127,315.10, 190,948.05 and 120,992.85

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Solution

The fourth proportional to 127,315.10, 190,948.05 and 120,992.85 is: 181,465.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,315.10 : 190,948.05 = 120,992.85 : x
  2. Step 2: Convert to fraction form
    127,315.10/190,948.05 = 120,992.85/x
  3. Step 3: Cross multiply
    127,315.10x = 190,948.05 × 120,992.85
  4. Step 4: Simplify right side
    127,315.10x = 23,103,348,771.44
  5. Step 5: Solve for x
    x = 23,103,348,771.44/127,315.10
  6. Step 6: Final answer
    x = 181,465.89

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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.