Home / 142,513.13-196,665.53-78,850.93

Finding the Fourth Proportional to 142,513.13, 196,665.53 and 78,850.93

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Solution

The fourth proportional to 142,513.13, 196,665.53 and 78,850.93 is: 108,812.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,513.13 : 196,665.53 = 78,850.93 : x
  2. Step 2: Convert to fraction form
    142,513.13/196,665.53 = 78,850.93/x
  3. Step 3: Cross multiply
    142,513.13x = 196,665.53 × 78,850.93
  4. Step 4: Simplify right side
    142,513.13x = 15,507,259,939.44
  5. Step 5: Solve for x
    x = 15,507,259,939.44/142,513.13
  6. Step 6: Final answer
    x = 108,812.85

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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.