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Finding the Fourth Proportional to 139,968,171.70, 209,952,257.55 and 63,440,667.70

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Solution

The fourth proportional to 139,968,171.70, 209,952,257.55 and 63,440,667.70 is: 95,161,001.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,171.70 : 209,952,257.55 = 63,440,667.70 : x
  2. Step 2: Convert to fraction form
    139,968,171.70/209,952,257.55 = 63,440,667.70/x
  3. Step 3: Cross multiply
    139,968,171.70x = 209,952,257.55 × 63,440,667.70
  4. Step 4: Simplify right side
    139,968,171.70x = 13,319,511,404,094,368
  5. Step 5: Solve for x
    x = 13,319,511,404,094,368/139,968,171.70
  6. Step 6: Final answer
    x = 95,161,001.55

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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.