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Finding the Fourth Proportional to 153,912.40, 230,868.60 and 134,229.40

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Solution

The fourth proportional to 153,912.40, 230,868.60 and 134,229.40 is: 201,344.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,912.40 : 230,868.60 = 134,229.40 : x
  2. Step 2: Convert to fraction form
    153,912.40/230,868.60 = 134,229.40/x
  3. Step 3: Cross multiply
    153,912.40x = 230,868.60 × 134,229.40
  4. Step 4: Simplify right side
    153,912.40x = 30,989,353,656.84
  5. Step 5: Solve for x
    x = 30,989,353,656.84/153,912.40
  6. Step 6: Final answer
    x = 201,344.10

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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.