Home / 99,155,090.80-148,732,636.20-80,979,808.60

Finding the Fourth Proportional to 99,155,090.80, 148,732,636.20 and 80,979,808.60

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Solution

The fourth proportional to 99,155,090.80, 148,732,636.20 and 80,979,808.60 is: 121,469,712.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,155,090.80 : 148,732,636.20 = 80,979,808.60 : x
  2. Step 2: Convert to fraction form
    99,155,090.80/148,732,636.20 = 80,979,808.60/x
  3. Step 3: Cross multiply
    99,155,090.80x = 148,732,636.20 × 80,979,808.60
  4. Step 4: Simplify right side
    99,155,090.80x = 12,044,340,412,049,430
  5. Step 5: Solve for x
    x = 12,044,340,412,049,430/99,155,090.80
  6. Step 6: Final answer
    x = 121,469,712.90

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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.