Home / 123,554.61-170,520.39-80,580.06

Finding the Fourth Proportional to 123,554.61, 170,520.39 and 80,580.06

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Solution

The fourth proportional to 123,554.61, 170,520.39 and 80,580.06 is: 111,210.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,554.61 : 170,520.39 = 80,580.06 : x
  2. Step 2: Convert to fraction form
    123,554.61/170,520.39 = 80,580.06/x
  3. Step 3: Cross multiply
    123,554.61x = 170,520.39 × 80,580.06
  4. Step 4: Simplify right side
    123,554.61x = 13,740,543,257.42
  5. Step 5: Solve for x
    x = 13,740,543,257.42/123,554.61
  6. Step 6: Final answer
    x = 111,210.28

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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.