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Finding the Fourth Proportional to 666,750.80, 1,000,126.20 and 168,114.80

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Solution

The fourth proportional to 666,750.80, 1,000,126.20 and 168,114.80 is: 252,172.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,750.80 : 1,000,126.20 = 168,114.80 : x
  2. Step 2: Convert to fraction form
    666,750.80/1,000,126.20 = 168,114.80/x
  3. Step 3: Cross multiply
    666,750.80x = 1,000,126.20 × 168,114.80
  4. Step 4: Simplify right side
    666,750.80x = 168,136,016,087.76
  5. Step 5: Solve for x
    x = 168,136,016,087.76/666,750.80
  6. Step 6: Final answer
    x = 252,172.20

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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.