Home / 135,168.20-186,524.13-74,734.10

Finding the Fourth Proportional to 135,168.20, 186,524.13 and 74,734.10

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Solution

The fourth proportional to 135,168.20, 186,524.13 and 74,734.10 is: 103,128.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,168.20 : 186,524.13 = 74,734.10 : x
  2. Step 2: Convert to fraction form
    135,168.20/186,524.13 = 74,734.10/x
  3. Step 3: Cross multiply
    135,168.20x = 186,524.13 × 74,734.10
  4. Step 4: Simplify right side
    135,168.20x = 13,939,712,983.83
  5. Step 5: Solve for x
    x = 13,939,712,983.83/135,168.20
  6. Step 6: Final answer
    x = 103,128.64

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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.