Home / 132,694.09-183,132.97-78,979.28

Finding the Fourth Proportional to 132,694.09, 183,132.97 and 78,979.28

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Solution

The fourth proportional to 132,694.09, 183,132.97 and 78,979.28 is: 109,000.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,694.09 : 183,132.97 = 78,979.28 : x
  2. Step 2: Convert to fraction form
    132,694.09/183,132.97 = 78,979.28/x
  3. Step 3: Cross multiply
    132,694.09x = 183,132.97 × 78,979.28
  4. Step 4: Simplify right side
    132,694.09x = 14,463,709,001.75
  5. Step 5: Solve for x
    x = 14,463,709,001.75/132,694.09
  6. Step 6: Final answer
    x = 109,000.40

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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.