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Finding the Fourth Proportional to 139,896,000.60, 209,844,000.90 and 49,007,779.80

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Solution

The fourth proportional to 139,896,000.60, 209,844,000.90 and 49,007,779.80 is: 73,511,669.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,896,000.60 : 209,844,000.90 = 49,007,779.80 : x
  2. Step 2: Convert to fraction form
    139,896,000.60/209,844,000.90 = 49,007,779.80/x
  3. Step 3: Cross multiply
    139,896,000.60x = 209,844,000.90 × 49,007,779.80
  4. Step 4: Simplify right side
    139,896,000.60x = 10,283,988,588,458,202
  5. Step 5: Solve for x
    x = 10,283,988,588,458,202/139,896,000.60
  6. Step 6: Final answer
    x = 73,511,669.70

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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.