Home / 80,780.04-120,981.96-77,977.44

Finding the Fourth Proportional to 80,780.04, 120,981.96 and 77,977.44

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Solution

The fourth proportional to 80,780.04, 120,981.96 and 77,977.44 is: 116,784.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,780.04 : 120,981.96 = 77,977.44 : x
  2. Step 2: Convert to fraction form
    80,780.04/120,981.96 = 77,977.44/x
  3. Step 3: Cross multiply
    80,780.04x = 120,981.96 × 77,977.44
  4. Step 4: Simplify right side
    80,780.04x = 9,433,863,526.98
  5. Step 5: Solve for x
    x = 9,433,863,526.98/80,780.04
  6. Step 6: Final answer
    x = 116,784.59

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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.