Home / 80,509.42-120,577.27-77,706.99

Finding the Fourth Proportional to 80,509.42, 120,577.27 and 77,706.99

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Solution

The fourth proportional to 80,509.42, 120,577.27 and 77,706.99 is: 116,380.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,509.42 : 120,577.27 = 77,706.99 : x
  2. Step 2: Convert to fraction form
    80,509.42/120,577.27 = 77,706.99/x
  3. Step 3: Cross multiply
    80,509.42x = 120,577.27 × 77,706.99
  4. Step 4: Simplify right side
    80,509.42x = 9,369,696,714.12
  5. Step 5: Solve for x
    x = 9,369,696,714.12/80,509.42
  6. Step 6: Final answer
    x = 116,380.13

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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.