Home / 115,012.78-158,553.62-89,474.28

Finding the Fourth Proportional to 115,012.78, 158,553.62 and 89,474.28

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Solution

The fourth proportional to 115,012.78, 158,553.62 and 89,474.28 is: 123,346.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,012.78 : 158,553.62 = 89,474.28 : x
  2. Step 2: Convert to fraction form
    115,012.78/158,553.62 = 89,474.28/x
  3. Step 3: Cross multiply
    115,012.78x = 158,553.62 × 89,474.28
  4. Step 4: Simplify right side
    115,012.78x = 14,186,470,990.89
  5. Step 5: Solve for x
    x = 14,186,470,990.89/115,012.78
  6. Step 6: Final answer
    x = 123,346.91

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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.