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Finding the Fourth Proportional to 154,102.98, 231,274.98 and 79,220.10

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Solution

The fourth proportional to 154,102.98, 231,274.98 and 79,220.10 is: 118,892.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,102.98 : 231,274.98 = 79,220.10 : x
  2. Step 2: Convert to fraction form
    154,102.98/231,274.98 = 79,220.10/x
  3. Step 3: Cross multiply
    154,102.98x = 231,274.98 × 79,220.10
  4. Step 4: Simplify right side
    154,102.98x = 18,321,627,043.10
  5. Step 5: Solve for x
    x = 18,321,627,043.10/154,102.98
  6. Step 6: Final answer
    x = 118,892.10

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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.