Home / 127,927.60-191,891.40-81,271.60

Finding the Fourth Proportional to 127,927.60, 191,891.40 and 81,271.60

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Solution

The fourth proportional to 127,927.60, 191,891.40 and 81,271.60 is: 121,907.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,927.60 : 191,891.40 = 81,271.60 : x
  2. Step 2: Convert to fraction form
    127,927.60/191,891.40 = 81,271.60/x
  3. Step 3: Cross multiply
    127,927.60x = 191,891.40 × 81,271.60
  4. Step 4: Simplify right side
    127,927.60x = 15,595,321,104.24
  5. Step 5: Solve for x
    x = 15,595,321,104.24/127,927.60
  6. Step 6: Final answer
    x = 121,907.40

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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.