Home / 142,450.67-196,587.07-78,788.93

Finding the Fourth Proportional to 142,450.67, 196,587.07 and 78,788.93

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Solution

The fourth proportional to 142,450.67, 196,587.07 and 78,788.93 is: 108,731.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,450.67 : 196,587.07 = 78,788.93 : x
  2. Step 2: Convert to fraction form
    142,450.67/196,587.07 = 78,788.93/x
  3. Step 3: Cross multiply
    142,450.67x = 196,587.07 × 78,788.93
  4. Step 4: Simplify right side
    142,450.67x = 15,488,883,717.23
  5. Step 5: Solve for x
    x = 15,488,883,717.23/142,450.67
  6. Step 6: Final answer
    x = 108,731.56

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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.