Home / 143,428.08-197,924.64-78,893.22

Finding the Fourth Proportional to 143,428.08, 197,924.64 and 78,893.22

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Solution

The fourth proportional to 143,428.08, 197,924.64 and 78,893.22 is: 108,869.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,428.08 : 197,924.64 = 78,893.22 : x
  2. Step 2: Convert to fraction form
    143,428.08/197,924.64 = 78,893.22/x
  3. Step 3: Cross multiply
    143,428.08x = 197,924.64 × 78,893.22
  4. Step 4: Simplify right side
    143,428.08x = 15,614,912,574.38
  5. Step 5: Solve for x
    x = 15,614,912,574.38/143,428.08
  6. Step 6: Final answer
    x = 108,869.29

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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.