Home / 105,727.13-145,910.09-57,980.49

Finding the Fourth Proportional to 105,727.13, 145,910.09 and 57,980.49

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Solution

The fourth proportional to 105,727.13, 145,910.09 and 57,980.49 is: 80,016.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,727.13 : 145,910.09 = 57,980.49 : x
  2. Step 2: Convert to fraction form
    105,727.13/145,910.09 = 57,980.49/x
  3. Step 3: Cross multiply
    105,727.13x = 145,910.09 × 57,980.49
  4. Step 4: Simplify right side
    105,727.13x = 8,459,938,514.14
  5. Step 5: Solve for x
    x = 8,459,938,514.14/105,727.13
  6. Step 6: Final answer
    x = 80,016.72

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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.