Home / 126,678.56-190,031.16-51,786.79

Finding the Fourth Proportional to 126,678.56, 190,031.16 and 51,786.79

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Solution

The fourth proportional to 126,678.56, 190,031.16 and 51,786.79 is: 77,685.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,678.56 : 190,031.16 = 51,786.79 : x
  2. Step 2: Convert to fraction form
    126,678.56/190,031.16 = 51,786.79/x
  3. Step 3: Cross multiply
    126,678.56x = 190,031.16 × 51,786.79
  4. Step 4: Simplify right side
    126,678.56x = 9,841,104,564.42
  5. Step 5: Solve for x
    x = 9,841,104,564.42/126,678.56
  6. Step 6: Final answer
    x = 77,685.64

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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.