Home / 127,321.40-190,982.10-113,543.30

Finding the Fourth Proportional to 127,321.40, 190,982.10 and 113,543.30

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Solution

The fourth proportional to 127,321.40, 190,982.10 and 113,543.30 is: 170,314.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,321.40 : 190,982.10 = 113,543.30 : x
  2. Step 2: Convert to fraction form
    127,321.40/190,982.10 = 113,543.30/x
  3. Step 3: Cross multiply
    127,321.40x = 190,982.10 × 113,543.30
  4. Step 4: Simplify right side
    127,321.40x = 21,684,737,874.93
  5. Step 5: Solve for x
    x = 21,684,737,874.93/127,321.40
  6. Step 6: Final answer
    x = 170,314.95

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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.