Home / 116,511.42-160,720.83-80,722.38

Finding the Fourth Proportional to 116,511.42, 160,720.83 and 80,722.38

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Solution

The fourth proportional to 116,511.42, 160,720.83 and 80,722.38 is: 111,351.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,511.42 : 160,720.83 = 80,722.38 : x
  2. Step 2: Convert to fraction form
    116,511.42/160,720.83 = 80,722.38/x
  3. Step 3: Cross multiply
    116,511.42x = 160,720.83 × 80,722.38
  4. Step 4: Simplify right side
    116,511.42x = 12,973,767,913.18
  5. Step 5: Solve for x
    x = 12,973,767,913.18/116,511.42
  6. Step 6: Final answer
    x = 111,351.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.