Home / 123,228.81-169,977.45-80,790.06

Finding the Fourth Proportional to 123,228.81, 169,977.45 and 80,790.06

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Solution

The fourth proportional to 123,228.81, 169,977.45 and 80,790.06 is: 111,438.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,228.81 : 169,977.45 = 80,790.06 : x
  2. Step 2: Convert to fraction form
    123,228.81/169,977.45 = 80,790.06/x
  3. Step 3: Cross multiply
    123,228.81x = 169,977.45 × 80,790.06
  4. Step 4: Simplify right side
    123,228.81x = 13,732,488,384.15
  5. Step 5: Solve for x
    x = 13,732,488,384.15/123,228.81
  6. Step 6: Final answer
    x = 111,438.94

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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.