Home / 105,925.80-146,272.53-79,021.59

Finding the Fourth Proportional to 105,925.80, 146,272.53 and 79,021.59

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Solution

The fourth proportional to 105,925.80, 146,272.53 and 79,021.59 is: 109,120.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,925.80 : 146,272.53 = 79,021.59 : x
  2. Step 2: Convert to fraction form
    105,925.80/146,272.53 = 79,021.59/x
  3. Step 3: Cross multiply
    105,925.80x = 146,272.53 × 79,021.59
  4. Step 4: Simplify right side
    105,925.80x = 11,558,687,893.92
  5. Step 5: Solve for x
    x = 11,558,687,893.92/105,925.80
  6. Step 6: Final answer
    x = 109,120.61

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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.