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Finding the Fourth Proportional to 154,061.80, 230,939.10 and 70,810.60

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Solution

The fourth proportional to 154,061.80, 230,939.10 and 70,810.60 is: 106,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,061.80 : 230,939.10 = 70,810.60 : x
  2. Step 2: Convert to fraction form
    154,061.80/230,939.10 = 70,810.60/x
  3. Step 3: Cross multiply
    154,061.80x = 230,939.10 × 70,810.60
  4. Step 4: Simplify right side
    154,061.80x = 16,352,936,234.46
  5. Step 5: Solve for x
    x = 16,352,936,234.46/154,061.80
  6. Step 6: Final answer
    x = 106,145.30

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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.