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Finding the Fourth Proportional to 139,968,117.70, 209,952,176.55 and 49,100,892.10

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Solution

The fourth proportional to 139,968,117.70, 209,952,176.55 and 49,100,892.10 is: 73,651,338.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,117.70 : 209,952,176.55 = 49,100,892.10 : x
  2. Step 2: Convert to fraction form
    139,968,117.70/209,952,176.55 = 49,100,892.10/x
  3. Step 3: Cross multiply
    139,968,117.70x = 209,952,176.55 × 49,100,892.10
  4. Step 4: Simplify right side
    139,968,117.70x = 10,308,839,166,941,702
  5. Step 5: Solve for x
    x = 10,308,839,166,941,702/139,968,117.70
  6. Step 6: Final answer
    x = 73,651,338.15

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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.