Home / 123,345.16-170,289.66-80,977.96

Finding the Fourth Proportional to 123,345.16, 170,289.66 and 80,977.96

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Solution

The fourth proportional to 123,345.16, 170,289.66 and 80,977.96 is: 111,797.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,345.16 : 170,289.66 = 80,977.96 : x
  2. Step 2: Convert to fraction form
    123,345.16/170,289.66 = 80,977.96/x
  3. Step 3: Cross multiply
    123,345.16x = 170,289.66 × 80,977.96
  4. Step 4: Simplify right side
    123,345.16x = 13,789,709,275.89
  5. Step 5: Solve for x
    x = 13,789,709,275.89/123,345.16
  6. Step 6: Final answer
    x = 111,797.73

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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.