Home / 126,889.12-190,126.04-76,817.45

Finding the Fourth Proportional to 126,889.12, 190,126.04 and 76,817.45

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Solution

The fourth proportional to 126,889.12, 190,126.04 and 76,817.45 is: 115,100.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,889.12 : 190,126.04 = 76,817.45 : x
  2. Step 2: Convert to fraction form
    126,889.12/190,126.04 = 76,817.45/x
  3. Step 3: Cross multiply
    126,889.12x = 190,126.04 × 76,817.45
  4. Step 4: Simplify right side
    126,889.12x = 14,604,996,593.17
  5. Step 5: Solve for x
    x = 14,604,996,593.17/126,889.12
  6. Step 6: Final answer
    x = 115,100.47

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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.