Home / 142,858.84-197,143.62-82,428.76

Finding the Fourth Proportional to 142,858.84, 197,143.62 and 82,428.76

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Solution

The fourth proportional to 142,858.84, 197,143.62 and 82,428.76 is: 113,750.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,858.84 : 197,143.62 = 82,428.76 : x
  2. Step 2: Convert to fraction form
    142,858.84/197,143.62 = 82,428.76/x
  3. Step 3: Cross multiply
    142,858.84x = 197,143.62 × 82,428.76
  4. Step 4: Simplify right side
    142,858.84x = 16,250,304,138.51
  5. Step 5: Solve for x
    x = 16,250,304,138.51/142,858.84
  6. Step 6: Final answer
    x = 113,750.78

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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.