Home / 122,136,002.20-183,204,003.30-85,785,437.80

Finding the Fourth Proportional to 122,136,002.20, 183,204,003.30 and 85,785,437.80

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Solution

The fourth proportional to 122,136,002.20, 183,204,003.30 and 85,785,437.80 is: 128,678,156.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,136,002.20 : 183,204,003.30 = 85,785,437.80 : x
  2. Step 2: Convert to fraction form
    122,136,002.20/183,204,003.30 = 85,785,437.80/x
  3. Step 3: Cross multiply
    122,136,002.20x = 183,204,003.30 × 85,785,437.80
  4. Step 4: Simplify right side
    122,136,002.20x = 15,716,235,629,803,146
  5. Step 5: Solve for x
    x = 15,716,235,629,803,146/122,136,002.20
  6. Step 6: Final answer
    x = 128,678,156.70

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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.