Home / 139,968,366.30-209,952,549.45-79,502,190.30

Finding the Fourth Proportional to 139,968,366.30, 209,952,549.45 and 79,502,190.30

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Solution

The fourth proportional to 139,968,366.30, 209,952,549.45 and 79,502,190.30 is: 119,253,285.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,366.30 : 209,952,549.45 = 79,502,190.30 : x
  2. Step 2: Convert to fraction form
    139,968,366.30/209,952,549.45 = 79,502,190.30/x
  3. Step 3: Cross multiply
    139,968,366.30x = 209,952,549.45 × 79,502,190.30
  4. Step 4: Simplify right side
    139,968,366.30x = 16,691,687,540,344,058
  5. Step 5: Solve for x
    x = 16,691,687,540,344,058/139,968,366.30
  6. Step 6: Final answer
    x = 119,253,285.45

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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.