Home / 142,292.06-196,363.11-78,629.86

Finding the Fourth Proportional to 142,292.06, 196,363.11 and 78,629.86

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Solution

The fourth proportional to 142,292.06, 196,363.11 and 78,629.86 is: 108,509.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,292.06 : 196,363.11 = 78,629.86 : x
  2. Step 2: Convert to fraction form
    142,292.06/196,363.11 = 78,629.86/x
  3. Step 3: Cross multiply
    142,292.06x = 196,363.11 × 78,629.86
  4. Step 4: Simplify right side
    142,292.06x = 15,440,002,866.65
  5. Step 5: Solve for x
    x = 15,440,002,866.65/142,292.06
  6. Step 6: Final answer
    x = 108,509.24

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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.