Home / 136,720.27-188,623.82-85,735.16

Finding the Fourth Proportional to 136,720.27, 188,623.82 and 85,735.16

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Solution

The fourth proportional to 136,720.27, 188,623.82 and 85,735.16 is: 118,283.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,720.27 : 188,623.82 = 85,735.16 : x
  2. Step 2: Convert to fraction form
    136,720.27/188,623.82 = 85,735.16/x
  3. Step 3: Cross multiply
    136,720.27x = 188,623.82 × 85,735.16
  4. Step 4: Simplify right side
    136,720.27x = 16,171,693,366.07
  5. Step 5: Solve for x
    x = 16,171,693,366.07/136,720.27
  6. Step 6: Final answer
    x = 118,283.07

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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.