Home / 80,590,155.40-120,885,233.10-68,119,006.60

Finding the Fourth Proportional to 80,590,155.40, 120,885,233.10 and 68,119,006.60

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Solution

The fourth proportional to 80,590,155.40, 120,885,233.10 and 68,119,006.60 is: 102,178,509.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,590,155.40 : 120,885,233.10 = 68,119,006.60 : x
  2. Step 2: Convert to fraction form
    80,590,155.40/120,885,233.10 = 68,119,006.60/x
  3. Step 3: Cross multiply
    80,590,155.40x = 120,885,233.10 × 68,119,006.60
  4. Step 4: Simplify right side
    80,590,155.40x = 8,234,581,991,381,437
  5. Step 5: Solve for x
    x = 8,234,581,991,381,437/80,590,155.40
  6. Step 6: Final answer
    x = 102,178,509.90

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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.