Home / 123,505.62-170,302.41-80,405.58

Finding the Fourth Proportional to 123,505.62, 170,302.41 and 80,405.58

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Solution

The fourth proportional to 123,505.62, 170,302.41 and 80,405.58 is: 110,871.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,505.62 : 170,302.41 = 80,405.58 : x
  2. Step 2: Convert to fraction form
    123,505.62/170,302.41 = 80,405.58/x
  3. Step 3: Cross multiply
    123,505.62x = 170,302.41 × 80,405.58
  4. Step 4: Simplify right side
    123,505.62x = 13,693,264,051.45
  5. Step 5: Solve for x
    x = 13,693,264,051.45/123,505.62
  6. Step 6: Final answer
    x = 110,871.59

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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.