Home / 142,623.44-196,820.35-78,965.34

Finding the Fourth Proportional to 142,623.44, 196,820.35 and 78,965.34

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Solution

The fourth proportional to 142,623.44, 196,820.35 and 78,965.34 is: 108,972.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,623.44 : 196,820.35 = 78,965.34 : x
  2. Step 2: Convert to fraction form
    142,623.44/196,820.35 = 78,965.34/x
  3. Step 3: Cross multiply
    142,623.44x = 196,820.35 × 78,965.34
  4. Step 4: Simplify right side
    142,623.44x = 15,541,984,477.74
  5. Step 5: Solve for x
    x = 15,541,984,477.74/142,623.44
  6. Step 6: Final answer
    x = 108,972.16

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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.