Home / 127,085.64-190,522.68-99,129.60

Finding the Fourth Proportional to 127,085.64, 190,522.68 and 99,129.60

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Solution

The fourth proportional to 127,085.64, 190,522.68 and 99,129.60 is: 148,611.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,085.64 : 190,522.68 = 99,129.60 : x
  2. Step 2: Convert to fraction form
    127,085.64/190,522.68 = 99,129.60/x
  3. Step 3: Cross multiply
    127,085.64x = 190,522.68 × 99,129.60
  4. Step 4: Simplify right side
    127,085.64x = 18,886,437,059.33
  5. Step 5: Solve for x
    x = 18,886,437,059.33/127,085.64
  6. Step 6: Final answer
    x = 148,611.89

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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.