Home / 127,260.10-190,890.15-100,821.70

Finding the Fourth Proportional to 127,260.10, 190,890.15 and 100,821.70

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Solution

The fourth proportional to 127,260.10, 190,890.15 and 100,821.70 is: 151,232.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,260.10 : 190,890.15 = 100,821.70 : x
  2. Step 2: Convert to fraction form
    127,260.10/190,890.15 = 100,821.70/x
  3. Step 3: Cross multiply
    127,260.10x = 190,890.15 × 100,821.70
  4. Step 4: Simplify right side
    127,260.10x = 19,245,869,436.26
  5. Step 5: Solve for x
    x = 19,245,869,436.26/127,260.10
  6. Step 6: Final answer
    x = 151,232.55

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1.5x scale

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.