Home / 142,096.69-196,093.45-78,434.51

Finding the Fourth Proportional to 142,096.69, 196,093.45 and 78,434.51

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Solution

The fourth proportional to 142,096.69, 196,093.45 and 78,434.51 is: 108,239.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,096.69 : 196,093.45 = 78,434.51 : x
  2. Step 2: Convert to fraction form
    142,096.69/196,093.45 = 78,434.51/x
  3. Step 3: Cross multiply
    142,096.69x = 196,093.45 × 78,434.51
  4. Step 4: Simplify right side
    142,096.69x = 15,380,492,488.41
  5. Step 5: Solve for x
    x = 15,380,492,488.41/142,096.69
  6. Step 6: Final answer
    x = 108,239.63

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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.