Home / 131,583.12-181,573.74-74,219.28

Finding the Fourth Proportional to 131,583.12, 181,573.74 and 74,219.28

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Solution

The fourth proportional to 131,583.12, 181,573.74 and 74,219.28 is: 102,416.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,583.12 : 181,573.74 = 74,219.28 : x
  2. Step 2: Convert to fraction form
    131,583.12/181,573.74 = 74,219.28/x
  3. Step 3: Cross multiply
    131,583.12x = 181,573.74 × 74,219.28
  4. Step 4: Simplify right side
    131,583.12x = 13,476,272,249.71
  5. Step 5: Solve for x
    x = 13,476,272,249.71/131,583.12
  6. Step 6: Final answer
    x = 102,416.42

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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.