Home / 126,722.88-190,054.32-42,486.12

Finding the Fourth Proportional to 126,722.88, 190,054.32 and 42,486.12

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Solution

The fourth proportional to 126,722.88, 190,054.32 and 42,486.12 is: 63,719.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,722.88 : 190,054.32 = 42,486.12 : x
  2. Step 2: Convert to fraction form
    126,722.88/190,054.32 = 42,486.12/x
  3. Step 3: Cross multiply
    126,722.88x = 190,054.32 × 42,486.12
  4. Step 4: Simplify right side
    126,722.88x = 8,074,670,646.04
  5. Step 5: Solve for x
    x = 8,074,670,646.04/126,722.88
  6. Step 6: Final answer
    x = 63,719.12

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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.