Home / 142,910.54-197,228.37-79,268.90

Finding the Fourth Proportional to 142,910.54, 197,228.37 and 79,268.90

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Solution

The fourth proportional to 142,910.54, 197,228.37 and 79,268.90 is: 109,397.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,910.54 : 197,228.37 = 79,268.90 : x
  2. Step 2: Convert to fraction form
    142,910.54/197,228.37 = 79,268.90/x
  3. Step 3: Cross multiply
    142,910.54x = 197,228.37 × 79,268.90
  4. Step 4: Simplify right side
    142,910.54x = 15,634,075,938.69
  5. Step 5: Solve for x
    x = 15,634,075,938.69/142,910.54
  6. Step 6: Final answer
    x = 109,397.64

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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.