Home / 124,418.05-171,591.28-105,131.45

Finding the Fourth Proportional to 124,418.05, 171,591.28 and 105,131.45

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Solution

The fourth proportional to 124,418.05, 171,591.28 and 105,131.45 is: 144,992.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,418.05 : 171,591.28 = 105,131.45 : x
  2. Step 2: Convert to fraction form
    124,418.05/171,591.28 = 105,131.45/x
  3. Step 3: Cross multiply
    124,418.05x = 171,591.28 × 105,131.45
  4. Step 4: Simplify right side
    124,418.05x = 18,039,640,239.91
  5. Step 5: Solve for x
    x = 18,039,640,239.91/124,418.05
  6. Step 6: Final answer
    x = 144,992.15

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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.