Home / 127,128.38-190,618.73-48,199.55

Finding the Fourth Proportional to 127,128.38, 190,618.73 and 48,199.55

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Solution

The fourth proportional to 127,128.38, 190,618.73 and 48,199.55 is: 72,271.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,128.38 : 190,618.73 = 48,199.55 : x
  2. Step 2: Convert to fraction form
    127,128.38/190,618.73 = 48,199.55/x
  3. Step 3: Cross multiply
    127,128.38x = 190,618.73 × 48,199.55
  4. Step 4: Simplify right side
    127,128.38x = 9,187,735,813.48
  5. Step 5: Solve for x
    x = 9,187,735,813.48/127,128.38
  6. Step 6: Final answer
    x = 72,271.32

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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.