Home / 123,860.97-170,903.07-75,430.44

Finding the Fourth Proportional to 123,860.97, 170,903.07 and 75,430.44

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Solution

The fourth proportional to 123,860.97, 170,903.07 and 75,430.44 is: 104,078.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,860.97 : 170,903.07 = 75,430.44 : x
  2. Step 2: Convert to fraction form
    123,860.97/170,903.07 = 75,430.44/x
  3. Step 3: Cross multiply
    123,860.97x = 170,903.07 × 75,430.44
  4. Step 4: Simplify right side
    123,860.97x = 12,891,293,767.45
  5. Step 5: Solve for x
    x = 12,891,293,767.45/123,860.97
  6. Step 6: Final answer
    x = 104,078.74

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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.