Home / 130,696.25-180,333-76,961.66

Finding the Fourth Proportional to 130,696.25, 180,333 and 76,961.66

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Solution

The fourth proportional to 130,696.25, 180,333 and 76,961.66 is: 106,190.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,696.25 : 180,333 = 76,961.66 : x
  2. Step 2: Convert to fraction form
    130,696.25/180,333 = 76,961.66/x
  3. Step 3: Cross multiply
    130,696.25x = 180,333 × 76,961.66
  4. Step 4: Simplify right side
    130,696.25x = 13,878,727,032.78
  5. Step 5: Solve for x
    x = 13,878,727,032.78/130,696.25
  6. Step 6: Final answer
    x = 106,190.71

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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.