Home / 141,969,938.40-212,807,941.20-77,136,760.80

Finding the Fourth Proportional to 141,969,938.40, 212,807,941.20 and 77,136,760.80

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Solution

The fourth proportional to 141,969,938.40, 212,807,941.20 and 77,136,760.80 is: 115,625,289.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,969,938.40 : 212,807,941.20 = 77,136,760.80 : x
  2. Step 2: Convert to fraction form
    141,969,938.40/212,807,941.20 = 77,136,760.80/x
  3. Step 3: Cross multiply
    141,969,938.40x = 212,807,941.20 × 77,136,760.80
  4. Step 4: Simplify right side
    141,969,938.40x = 16,415,315,256,684,864
  5. Step 5: Solve for x
    x = 16,415,315,256,684,864/141,969,938.40
  6. Step 6: Final answer
    x = 115,625,289.70

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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.