Home / 199,389.72-275,148.11-118,815.45

Finding the Fourth Proportional to 199,389.72, 275,148.11 and 118,815.45

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Solution

The fourth proportional to 199,389.72, 275,148.11 and 118,815.45 is: 163,959.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,389.72 : 275,148.11 = 118,815.45 : x
  2. Step 2: Convert to fraction form
    199,389.72/275,148.11 = 118,815.45/x
  3. Step 3: Cross multiply
    199,389.72x = 275,148.11 × 118,815.45
  4. Step 4: Simplify right side
    199,389.72x = 32,691,845,912.22
  5. Step 5: Solve for x
    x = 32,691,845,912.22/199,389.72
  6. Step 6: Final answer
    x = 163,959.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.