Home / 127,400.04-190,900.80-80,554.50

Finding the Fourth Proportional to 127,400.04, 190,900.80 and 80,554.50

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Solution

The fourth proportional to 127,400.04, 190,900.80 and 80,554.50 is: 120,705.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,400.04 : 190,900.80 = 80,554.50 : x
  2. Step 2: Convert to fraction form
    127,400.04/190,900.80 = 80,554.50/x
  3. Step 3: Cross multiply
    127,400.04x = 190,900.80 × 80,554.50
  4. Step 4: Simplify right side
    127,400.04x = 15,377,918,493.60
  5. Step 5: Solve for x
    x = 15,377,918,493.60/127,400.04
  6. Step 6: Final answer
    x = 120,705.76

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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.