Home / 126,896.50-190,347.81-42,657.76

Finding the Fourth Proportional to 126,896.50, 190,347.81 and 42,657.76

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Solution

The fourth proportional to 126,896.50, 190,347.81 and 42,657.76 is: 63,987.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,896.50 : 190,347.81 = 42,657.76 : x
  2. Step 2: Convert to fraction form
    126,896.50/190,347.81 = 42,657.76/x
  3. Step 3: Cross multiply
    126,896.50x = 190,347.81 × 42,657.76
  4. Step 4: Simplify right side
    126,896.50x = 8,119,811,195.51
  5. Step 5: Solve for x
    x = 8,119,811,195.51/126,896.50
  6. Step 6: Final answer
    x = 63,987.67

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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.