Home / 124,725.81-172,121.72-68,137.19

Finding the Fourth Proportional to 124,725.81, 172,121.72 and 68,137.19

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Solution

The fourth proportional to 124,725.81, 172,121.72 and 68,137.19 is: 94,029.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,725.81 : 172,121.72 = 68,137.19 : x
  2. Step 2: Convert to fraction form
    124,725.81/172,121.72 = 68,137.19/x
  3. Step 3: Cross multiply
    124,725.81x = 172,121.72 × 68,137.19
  4. Step 4: Simplify right side
    124,725.81x = 11,727,890,338.77
  5. Step 5: Solve for x
    x = 11,727,890,338.77/124,725.81
  6. Step 6: Final answer
    x = 94,029.38

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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.