Home / 126,930.87-190,412.64-42,654.69

Finding the Fourth Proportional to 126,930.87, 190,412.64 and 42,654.69

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Solution

The fourth proportional to 126,930.87, 190,412.64 and 42,654.69 is: 63,987.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,930.87 : 190,412.64 = 42,654.69 : x
  2. Step 2: Convert to fraction form
    126,930.87/190,412.64 = 42,654.69/x
  3. Step 3: Cross multiply
    126,930.87x = 190,412.64 × 42,654.69
  4. Step 4: Simplify right side
    126,930.87x = 8,121,992,131.28
  5. Step 5: Solve for x
    x = 8,121,992,131.28/126,930.87
  6. Step 6: Final answer
    x = 63,987.52

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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.