Home / 105,161.75-145,126.65-57,418.73

Finding the Fourth Proportional to 105,161.75, 145,126.65 and 57,418.73

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Solution

The fourth proportional to 105,161.75, 145,126.65 and 57,418.73 is: 79,239.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,161.75 : 145,126.65 = 57,418.73 : x
  2. Step 2: Convert to fraction form
    105,161.75/145,126.65 = 57,418.73/x
  3. Step 3: Cross multiply
    105,161.75x = 145,126.65 × 57,418.73
  4. Step 4: Simplify right side
    105,161.75x = 8,332,987,206.52
  5. Step 5: Solve for x
    x = 8,332,987,206.52/105,161.75
  6. Step 6: Final answer
    x = 79,239.72

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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.