Home / 142,770.40-197,022.96-79,112.32

Finding the Fourth Proportional to 142,770.40, 197,022.96 and 79,112.32

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Solution

The fourth proportional to 142,770.40, 197,022.96 and 79,112.32 is: 109,174.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,770.40 : 197,022.96 = 79,112.32 : x
  2. Step 2: Convert to fraction form
    142,770.40/197,022.96 = 79,112.32/x
  3. Step 3: Cross multiply
    142,770.40x = 197,022.96 × 79,112.32
  4. Step 4: Simplify right side
    142,770.40x = 15,586,943,458.87
  5. Step 5: Solve for x
    x = 15,586,943,458.87/142,770.40
  6. Step 6: Final answer
    x = 109,174.90

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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.