Home / 135,391.04-186,855.84-85,083.20

Finding the Fourth Proportional to 135,391.04, 186,855.84 and 85,083.20

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Solution

The fourth proportional to 135,391.04, 186,855.84 and 85,083.20 is: 117,425.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,391.04 : 186,855.84 = 85,083.20 : x
  2. Step 2: Convert to fraction form
    135,391.04/186,855.84 = 85,083.20/x
  3. Step 3: Cross multiply
    135,391.04x = 186,855.84 × 85,083.20
  4. Step 4: Simplify right side
    135,391.04x = 15,898,292,805.89
  5. Step 5: Solve for x
    x = 15,898,292,805.89/135,391.04
  6. Step 6: Final answer
    x = 117,425.00

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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.