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Finding the Fourth Proportional to 139,968,003.30, 209,952,004.95 and 133,590,711.30

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Solution

The fourth proportional to 139,968,003.30, 209,952,004.95 and 133,590,711.30 is: 200,386,066.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,003.30 : 209,952,004.95 = 133,590,711.30 : x
  2. Step 2: Convert to fraction form
    139,968,003.30/209,952,004.95 = 133,590,711.30/x
  3. Step 3: Cross multiply
    139,968,003.30x = 209,952,004.95 × 133,590,711.30
  4. Step 4: Simplify right side
    139,968,003.30x = 28,047,637,680,131,620
  5. Step 5: Solve for x
    x = 28,047,637,680,131,620/139,968,003.30
  6. Step 6: Final answer
    x = 200,386,066.95

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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.