Home / 123,811.03-170,553.16-105,602.43

Finding the Fourth Proportional to 123,811.03, 170,553.16 and 105,602.43

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Solution

The fourth proportional to 123,811.03, 170,553.16 and 105,602.43 is: 145,470.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,811.03 : 170,553.16 = 105,602.43 : x
  2. Step 2: Convert to fraction form
    123,811.03/170,553.16 = 105,602.43/x
  3. Step 3: Cross multiply
    123,811.03x = 170,553.16 × 105,602.43
  4. Step 4: Simplify right side
    123,811.03x = 18,010,828,353.37
  5. Step 5: Solve for x
    x = 18,010,828,353.37/123,811.03
  6. Step 6: Final answer
    x = 145,470.31

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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.