Home / 123,655.80-170,642.97-69,938.79

Finding the Fourth Proportional to 123,655.80, 170,642.97 and 69,938.79

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Solution

The fourth proportional to 123,655.80, 170,642.97 and 69,938.79 is: 96,514.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,655.80 : 170,642.97 = 69,938.79 : x
  2. Step 2: Convert to fraction form
    123,655.80/170,642.97 = 69,938.79/x
  3. Step 3: Cross multiply
    123,655.80x = 170,642.97 × 69,938.79
  4. Step 4: Simplify right side
    123,655.80x = 11,934,562,843.81
  5. Step 5: Solve for x
    x = 11,934,562,843.81/123,655.80
  6. Step 6: Final answer
    x = 96,514.38

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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.