Home / 126,915.30-190,433.70-84,815.55

Finding the Fourth Proportional to 126,915.30, 190,433.70 and 84,815.55

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Solution

The fourth proportional to 126,915.30, 190,433.70 and 84,815.55 is: 127,263.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,915.30 : 190,433.70 = 84,815.55 : x
  2. Step 2: Convert to fraction form
    126,915.30/190,433.70 = 84,815.55/x
  3. Step 3: Cross multiply
    126,915.30x = 190,433.70 × 84,815.55
  4. Step 4: Simplify right side
    126,915.30x = 16,151,739,004.04
  5. Step 5: Solve for x
    x = 16,151,739,004.04/126,915.30
  6. Step 6: Final answer
    x = 127,263.92

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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.