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Finding the Fourth Proportional to 141,769.20, 212,653.80 and 102,694.80

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Solution

The fourth proportional to 141,769.20, 212,653.80 and 102,694.80 is: 154,042.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,769.20 : 212,653.80 = 102,694.80 : x
  2. Step 2: Convert to fraction form
    141,769.20/212,653.80 = 102,694.80/x
  3. Step 3: Cross multiply
    141,769.20x = 212,653.80 × 102,694.80
  4. Step 4: Simplify right side
    141,769.20x = 21,838,439,460.24
  5. Step 5: Solve for x
    x = 21,838,439,460.24/141,769.20
  6. Step 6: Final answer
    x = 154,042.20

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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.