Home / 126,979.80-190,296.90-90,000.60

Finding the Fourth Proportional to 126,979.80, 190,296.90 and 90,000.60

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Solution

The fourth proportional to 126,979.80, 190,296.90 and 90,000.60 is: 134,878.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,979.80 : 190,296.90 = 90,000.60 : x
  2. Step 2: Convert to fraction form
    126,979.80/190,296.90 = 90,000.60/x
  3. Step 3: Cross multiply
    126,979.80x = 190,296.90 × 90,000.60
  4. Step 4: Simplify right side
    126,979.80x = 17,126,835,178.14
  5. Step 5: Solve for x
    x = 17,126,835,178.14/126,979.80
  6. Step 6: Final answer
    x = 134,878.42

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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.