Home / 131,583.78-181,574.62-77,859.42

Finding the Fourth Proportional to 131,583.78, 181,574.62 and 77,859.42

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Solution

The fourth proportional to 131,583.78, 181,574.62 and 77,859.42 is: 107,439.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,583.78 : 181,574.62 = 77,859.42 : x
  2. Step 2: Convert to fraction form
    131,583.78/181,574.62 = 77,859.42/x
  3. Step 3: Cross multiply
    131,583.78x = 181,574.62 × 77,859.42
  4. Step 4: Simplify right side
    131,583.78x = 14,137,294,599.92
  5. Step 5: Solve for x
    x = 14,137,294,599.92/131,583.78
  6. Step 6: Final answer
    x = 107,439.49

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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.