Home / 128,077.80-192,116.70-126,004.20

Finding the Fourth Proportional to 128,077.80, 192,116.70 and 126,004.20

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Solution

The fourth proportional to 128,077.80, 192,116.70 and 126,004.20 is: 189,006.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,077.80 : 192,116.70 = 126,004.20 : x
  2. Step 2: Convert to fraction form
    128,077.80/192,116.70 = 126,004.20/x
  3. Step 3: Cross multiply
    128,077.80x = 192,116.70 × 126,004.20
  4. Step 4: Simplify right side
    128,077.80x = 24,207,511,090.14
  5. Step 5: Solve for x
    x = 24,207,511,090.14/128,077.80
  6. Step 6: Final answer
    x = 189,006.30

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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.