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Finding the Fourth Proportional to 139,078,368,001.20, 208,617,552,001.79 and 139,078,368,001.20

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Solution

The fourth proportional to 139,078,368,001.20, 208,617,552,001.79 and 139,078,368,001.20 is: 208,617,552,001.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,078,368,001.20 : 208,617,552,001.79 = 139,078,368,001.20 : x
  2. Step 2: Convert to fraction form
    139,078,368,001.20/208,617,552,001.79 = 139,078,368,001.20/x
  3. Step 3: Cross multiply
    139,078,368,001.20x = 208,617,552,001.79 × 139,078,368,001.20
  4. Step 4: Simplify right side
    139,078,368,001.20x = 29,014,188,668,814,431,879,168
  5. Step 5: Solve for x
    x = 29,014,188,668,814,431,879,168/139,078,368,001.20
  6. Step 6: Final answer
    x = 208,617,552,001.79

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1.5x scale

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.