Home / 132,780.90-183,224.52-78,331.89

Finding the Fourth Proportional to 132,780.90, 183,224.52 and 78,331.89

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Solution

The fourth proportional to 132,780.90, 183,224.52 and 78,331.89 is: 108,090.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,780.90 : 183,224.52 = 78,331.89 : x
  2. Step 2: Convert to fraction form
    132,780.90/183,224.52 = 78,331.89/x
  3. Step 3: Cross multiply
    132,780.90x = 183,224.52 × 78,331.89
  4. Step 4: Simplify right side
    132,780.90x = 14,352,322,945.94
  5. Step 5: Solve for x
    x = 14,352,322,945.94/132,780.90
  6. Step 6: Final answer
    x = 108,090.27

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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.