Home / 126,988.70-190,315.91-70,855.22

Finding the Fourth Proportional to 126,988.70, 190,315.91 and 70,855.22

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Solution

The fourth proportional to 126,988.70, 190,315.91 and 70,855.22 is: 106,189.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,988.70 : 190,315.91 = 70,855.22 : x
  2. Step 2: Convert to fraction form
    126,988.70/190,315.91 = 70,855.22/x
  3. Step 3: Cross multiply
    126,988.70x = 190,315.91 × 70,855.22
  4. Step 4: Simplify right side
    126,988.70x = 13,484,876,325.48
  5. Step 5: Solve for x
    x = 13,484,876,325.48/126,988.70
  6. Step 6: Final answer
    x = 106,189.58

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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.