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Finding the Fourth Proportional to 139,968,125.70, 209,952,188.55 and 88,886,804.10

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Solution

The fourth proportional to 139,968,125.70, 209,952,188.55 and 88,886,804.10 is: 133,330,206.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,125.70 : 209,952,188.55 = 88,886,804.10 : x
  2. Step 2: Convert to fraction form
    139,968,125.70/209,952,188.55 = 88,886,804.10/x
  3. Step 3: Cross multiply
    139,968,125.70x = 209,952,188.55 × 88,886,804.10
  4. Step 4: Simplify right side
    139,968,125.70x = 18,661,979,054,010,112
  5. Step 5: Solve for x
    x = 18,661,979,054,010,112/139,968,125.70
  6. Step 6: Final answer
    x = 133,330,206.15

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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.