Home / 135,162.44-186,516.20-74,728.34

Finding the Fourth Proportional to 135,162.44, 186,516.20 and 74,728.34

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Solution

The fourth proportional to 135,162.44, 186,516.20 and 74,728.34 is: 103,120.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,162.44 : 186,516.20 = 74,728.34 : x
  2. Step 2: Convert to fraction form
    135,162.44/186,516.20 = 74,728.34/x
  3. Step 3: Cross multiply
    135,162.44x = 186,516.20 × 74,728.34
  4. Step 4: Simplify right side
    135,162.44x = 13,938,046,009.11
  5. Step 5: Solve for x
    x = 13,938,046,009.11/135,162.44
  6. Step 6: Final answer
    x = 103,120.70

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1.5x scale

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.