Home / 81,899,425,037.80-122,849,137,556.70-72,430,421,876.20

Finding the Fourth Proportional to 81,899,425,037.80, 122,849,137,556.70 and 72,430,421,876.20

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Solution

The fourth proportional to 81,899,425,037.80, 122,849,137,556.70 and 72,430,421,876.20 is: 108,645,632,814.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,899,425,037.80 : 122,849,137,556.70 = 72,430,421,876.20 : x
  2. Step 2: Convert to fraction form
    81,899,425,037.80/122,849,137,556.70 = 72,430,421,876.20/x
  3. Step 3: Cross multiply
    81,899,425,037.80x = 122,849,137,556.70 × 72,430,421,876.20
  4. Step 4: Simplify right side
    81,899,425,037.80x = 8,898,014,860,359,106,560,000
  5. Step 5: Solve for x
    x = 8,898,014,860,359,106,560,000/81,899,425,037.80
  6. Step 6: Final answer
    x = 108,645,632,814.30

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1.5x scale

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.