Home / 139,968,705.70-209,953,058.55-128,914,732.90

Finding the Fourth Proportional to 139,968,705.70, 209,953,058.55 and 128,914,732.90

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Solution

The fourth proportional to 139,968,705.70, 209,953,058.55 and 128,914,732.90 is: 193,372,099.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,705.70 : 209,953,058.55 = 128,914,732.90 : x
  2. Step 2: Convert to fraction form
    139,968,705.70/209,953,058.55 = 128,914,732.90/x
  3. Step 3: Cross multiply
    139,968,705.70x = 209,953,058.55 × 128,914,732.90
  4. Step 4: Simplify right side
    139,968,705.70x = 27,066,042,464,511,316
  5. Step 5: Solve for x
    x = 27,066,042,464,511,316/139,968,705.70
  6. Step 6: Final answer
    x = 193,372,099.35

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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.