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Finding the Fourth Proportional to 139,968,207.60, 209,952,311.40 and 111,057,817.20

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Solution

The fourth proportional to 139,968,207.60, 209,952,311.40 and 111,057,817.20 is: 166,586,725.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,207.60 : 209,952,311.40 = 111,057,817.20 : x
  2. Step 2: Convert to fraction form
    139,968,207.60/209,952,311.40 = 111,057,817.20/x
  3. Step 3: Cross multiply
    139,968,207.60x = 209,952,311.40 × 111,057,817.20
  4. Step 4: Simplify right side
    139,968,207.60x = 23,316,845,420,178,676
  5. Step 5: Solve for x
    x = 23,316,845,420,178,676/139,968,207.60
  6. Step 6: Final answer
    x = 166,586,725.80

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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.