Home / 199,382.69-275,240.26-122,915.45

Finding the Fourth Proportional to 199,382.69, 275,240.26 and 122,915.45

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Solution

The fourth proportional to 199,382.69, 275,240.26 and 122,915.45 is: 169,680.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,382.69 : 275,240.26 = 122,915.45 : x
  2. Step 2: Convert to fraction form
    199,382.69/275,240.26 = 122,915.45/x
  3. Step 3: Cross multiply
    199,382.69x = 275,240.26 × 122,915.45
  4. Step 4: Simplify right side
    199,382.69x = 33,831,281,257.76
  5. Step 5: Solve for x
    x = 33,831,281,257.76/199,382.69
  6. Step 6: Final answer
    x = 169,680.13

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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.