Home / 142,912.76-196,769.66-121,359.87

Finding the Fourth Proportional to 142,912.76, 196,769.66 and 121,359.87

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Solution

The fourth proportional to 142,912.76, 196,769.66 and 121,359.87 is: 167,094.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,912.76 : 196,769.66 = 121,359.87 : x
  2. Step 2: Convert to fraction form
    142,912.76/196,769.66 = 121,359.87/x
  3. Step 3: Cross multiply
    142,912.76x = 196,769.66 × 121,359.87
  4. Step 4: Simplify right side
    142,912.76x = 23,879,939,750.74
  5. Step 5: Solve for x
    x = 23,879,939,750.74/142,912.76
  6. Step 6: Final answer
    x = 167,094.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.