Home / 123,243.53-170,179.77-78,001.34

Finding the Fourth Proportional to 123,243.53, 170,179.77 and 78,001.34

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Solution

The fourth proportional to 123,243.53, 170,179.77 and 78,001.34 is: 107,707.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,243.53 : 170,179.77 = 78,001.34 : x
  2. Step 2: Convert to fraction form
    123,243.53/170,179.77 = 78,001.34/x
  3. Step 3: Cross multiply
    123,243.53x = 170,179.77 × 78,001.34
  4. Step 4: Simplify right side
    123,243.53x = 13,274,249,249.99
  5. Step 5: Solve for x
    x = 13,274,249,249.99/123,243.53
  6. Step 6: Final answer
    x = 107,707.48

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1.5x scale

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.