Home / 142,361.72-196,444.14-78,689.24

Finding the Fourth Proportional to 142,361.72, 196,444.14 and 78,689.24

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Solution

The fourth proportional to 142,361.72, 196,444.14 and 78,689.24 is: 108,582.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,361.72 : 196,444.14 = 78,689.24 : x
  2. Step 2: Convert to fraction form
    142,361.72/196,444.14 = 78,689.24/x
  3. Step 3: Cross multiply
    142,361.72x = 196,444.14 × 78,689.24
  4. Step 4: Simplify right side
    142,361.72x = 15,458,040,079.05
  5. Step 5: Solve for x
    x = 15,458,040,079.05/142,361.72
  6. Step 6: Final answer
    x = 108,582.84

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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.