Home / 142,235.63-196,268.43-78,569.63

Finding the Fourth Proportional to 142,235.63, 196,268.43 and 78,569.63

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Solution

The fourth proportional to 142,235.63, 196,268.43 and 78,569.63 is: 108,416.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,235.63 : 196,268.43 = 78,569.63 : x
  2. Step 2: Convert to fraction form
    142,235.63/196,268.43 = 78,569.63/x
  3. Step 3: Cross multiply
    142,235.63x = 196,268.43 × 78,569.63
  4. Step 4: Simplify right side
    142,235.63x = 15,420,736,944.44
  5. Step 5: Solve for x
    x = 15,420,736,944.44/142,235.63
  6. Step 6: Final answer
    x = 108,416.84

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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.