Home / 124,905.09-172,370.39-68,315.25

Finding the Fourth Proportional to 124,905.09, 172,370.39 and 68,315.25

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Solution

The fourth proportional to 124,905.09, 172,370.39 and 68,315.25 is: 94,275.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,905.09 : 172,370.39 = 68,315.25 : x
  2. Step 2: Convert to fraction form
    124,905.09/172,370.39 = 68,315.25/x
  3. Step 3: Cross multiply
    124,905.09x = 172,370.39 × 68,315.25
  4. Step 4: Simplify right side
    124,905.09x = 11,775,525,943.87
  5. Step 5: Solve for x
    x = 11,775,525,943.87/124,905.09
  6. Step 6: Final answer
    x = 94,275.79

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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.