Home / 131,285.25-181,174.39-74,696.63

Finding the Fourth Proportional to 131,285.25, 181,174.39 and 74,696.63

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Solution

The fourth proportional to 131,285.25, 181,174.39 and 74,696.63 is: 103,081.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,285.25 : 181,174.39 = 74,696.63 : x
  2. Step 2: Convert to fraction form
    131,285.25/181,174.39 = 74,696.63/x
  3. Step 3: Cross multiply
    131,285.25x = 181,174.39 × 74,696.63
  4. Step 4: Simplify right side
    131,285.25x = 13,533,115,642.26
  5. Step 5: Solve for x
    x = 13,533,115,642.26/131,285.25
  6. Step 6: Final answer
    x = 103,081.77

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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.