Home / 141,969,890.40-212,807,869.20-77,136,712.80

Finding the Fourth Proportional to 141,969,890.40, 212,807,869.20 and 77,136,712.80

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Solution

The fourth proportional to 141,969,890.40, 212,807,869.20 and 77,136,712.80 is: 115,625,217.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,969,890.40 : 212,807,869.20 = 77,136,712.80 : x
  2. Step 2: Convert to fraction form
    141,969,890.40/212,807,869.20 = 77,136,712.80/x
  3. Step 3: Cross multiply
    141,969,890.40x = 212,807,869.20 × 77,136,712.80
  4. Step 4: Simplify right side
    141,969,890.40x = 16,415,299,488,060,364
  5. Step 5: Solve for x
    x = 16,415,299,488,060,364/141,969,890.40
  6. Step 6: Final answer
    x = 115,625,217.73

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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.