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Finding the Fourth Proportional to 134,878.70, 202,318.05 and 85,015.10

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Solution

The fourth proportional to 134,878.70, 202,318.05 and 85,015.10 is: 127,522.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,878.70 : 202,318.05 = 85,015.10 : x
  2. Step 2: Convert to fraction form
    134,878.70/202,318.05 = 85,015.10/x
  3. Step 3: Cross multiply
    134,878.70x = 202,318.05 × 85,015.10
  4. Step 4: Simplify right side
    134,878.70x = 17,200,089,252.56
  5. Step 5: Solve for x
    x = 17,200,089,252.56/134,878.70
  6. Step 6: Final answer
    x = 127,522.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.