Home / 126,917.28-190,378.98-42,678.54

Finding the Fourth Proportional to 126,917.28, 190,378.98 and 42,678.54

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Solution

The fourth proportional to 126,917.28, 190,378.98 and 42,678.54 is: 64,018.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,917.28 : 190,378.98 = 42,678.54 : x
  2. Step 2: Convert to fraction form
    126,917.28/190,378.98 = 42,678.54/x
  3. Step 3: Cross multiply
    126,917.28x = 190,378.98 × 42,678.54
  4. Step 4: Simplify right side
    126,917.28x = 8,125,096,913.09
  5. Step 5: Solve for x
    x = 8,125,096,913.09/126,917.28
  6. Step 6: Final answer
    x = 64,018.84

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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.