Home / 143,769.36-198,345.48-90,031.44

Finding the Fourth Proportional to 143,769.36, 198,345.48 and 90,031.44

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Solution

The fourth proportional to 143,769.36, 198,345.48 and 90,031.44 is: 124,208.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,769.36 : 198,345.48 = 90,031.44 : x
  2. Step 2: Convert to fraction form
    143,769.36/198,345.48 = 90,031.44/x
  3. Step 3: Cross multiply
    143,769.36x = 198,345.48 × 90,031.44
  4. Step 4: Simplify right side
    143,769.36x = 17,857,329,181.89
  5. Step 5: Solve for x
    x = 17,857,329,181.89/143,769.36
  6. Step 6: Final answer
    x = 124,208.17

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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.