Home / 142,092.12-196,087.14-78,429.93

Finding the Fourth Proportional to 142,092.12, 196,087.14 and 78,429.93

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Solution

The fourth proportional to 142,092.12, 196,087.14 and 78,429.93 is: 108,233.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,092.12 : 196,087.14 = 78,429.93 : x
  2. Step 2: Convert to fraction form
    142,092.12/196,087.14 = 78,429.93/x
  3. Step 3: Cross multiply
    142,092.12x = 196,087.14 × 78,429.93
  4. Step 4: Simplify right side
    142,092.12x = 15,379,100,664.10
  5. Step 5: Solve for x
    x = 15,379,100,664.10/142,092.12
  6. Step 6: Final answer
    x = 108,233.32

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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.