Home / 141,972,394.40-212,811,625.20-77,139,216.80

Finding the Fourth Proportional to 141,972,394.40, 212,811,625.20 and 77,139,216.80

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Solution

The fourth proportional to 141,972,394.40, 212,811,625.20 and 77,139,216.80 is: 115,628,972.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,972,394.40 : 212,811,625.20 = 77,139,216.80 : x
  2. Step 2: Convert to fraction form
    141,972,394.40/212,811,625.20 = 77,139,216.80/x
  3. Step 3: Cross multiply
    141,972,394.40x = 212,811,625.20 × 77,139,216.80
  4. Step 4: Simplify right side
    141,972,394.40x = 16,416,122,093,863,142
  5. Step 5: Solve for x
    x = 16,416,122,093,863,142/141,972,394.40
  6. Step 6: Final answer
    x = 115,628,972.54

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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.