Home / 139,587,562.96-192,505,436.34-87,381,357.80

Finding the Fourth Proportional to 139,587,562.96, 192,505,436.34 and 87,381,357.80

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Solution

The fourth proportional to 139,587,562.96, 192,505,436.34 and 87,381,357.80 is: 120,507,773.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,587,562.96 : 192,505,436.34 = 87,381,357.80 : x
  2. Step 2: Convert to fraction form
    139,587,562.96/192,505,436.34 = 87,381,357.80/x
  3. Step 3: Cross multiply
    139,587,562.96x = 192,505,436.34 × 87,381,357.80
  4. Step 4: Simplify right side
    139,587,562.96x = 16,821,386,411,270,662
  5. Step 5: Solve for x
    x = 16,821,386,411,270,662/139,587,562.96
  6. Step 6: Final answer
    x = 120,507,773.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.