Home / 142,356.96-196,451.64-78,697.44

Finding the Fourth Proportional to 142,356.96, 196,451.64 and 78,697.44

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Solution

The fourth proportional to 142,356.96, 196,451.64 and 78,697.44 is: 108,601.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,356.96 : 196,451.64 = 78,697.44 : x
  2. Step 2: Convert to fraction form
    142,356.96/196,451.64 = 78,697.44/x
  3. Step 3: Cross multiply
    142,356.96x = 196,451.64 × 78,697.44
  4. Step 4: Simplify right side
    142,356.96x = 15,460,241,151.80
  5. Step 5: Solve for x
    x = 15,460,241,151.80/142,356.96
  6. Step 6: Final answer
    x = 108,601.93

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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.