Home / 142,214.13-196,249.23-78,550.56

Finding the Fourth Proportional to 142,214.13, 196,249.23 and 78,550.56

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Solution

The fourth proportional to 142,214.13, 196,249.23 and 78,550.56 is: 108,396.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,214.13 : 196,249.23 = 78,550.56 : x
  2. Step 2: Convert to fraction form
    142,214.13/196,249.23 = 78,550.56/x
  3. Step 3: Cross multiply
    142,214.13x = 196,249.23 × 78,550.56
  4. Step 4: Simplify right side
    142,214.13x = 15,415,486,916.07
  5. Step 5: Solve for x
    x = 15,415,486,916.07/142,214.13
  6. Step 6: Final answer
    x = 108,396.31

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1.5x scale

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.