Home / 105,293.25-145,221.09-79,537.74

Finding the Fourth Proportional to 105,293.25, 145,221.09 and 79,537.74

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Solution

The fourth proportional to 105,293.25, 145,221.09 and 79,537.74 is: 109,698.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,293.25 : 145,221.09 = 79,537.74 : x
  2. Step 2: Convert to fraction form
    105,293.25/145,221.09 = 79,537.74/x
  3. Step 3: Cross multiply
    105,293.25x = 145,221.09 × 79,537.74
  4. Step 4: Simplify right side
    105,293.25x = 11,550,557,298.94
  5. Step 5: Solve for x
    x = 11,550,557,298.94/105,293.25
  6. Step 6: Final answer
    x = 109,698.93

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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.