Home / 105,162.99-145,119.17-57,415.25

Finding the Fourth Proportional to 105,162.99, 145,119.17 and 57,415.25

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Solution

The fourth proportional to 105,162.99, 145,119.17 and 57,415.25 is: 79,229.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,162.99 : 145,119.17 = 57,415.25 : x
  2. Step 2: Convert to fraction form
    105,162.99/145,119.17 = 57,415.25/x
  3. Step 3: Cross multiply
    105,162.99x = 145,119.17 × 57,415.25
  4. Step 4: Simplify right side
    105,162.99x = 8,332,052,412.67
  5. Step 5: Solve for x
    x = 8,332,052,412.67/105,162.99
  6. Step 6: Final answer
    x = 79,229.89

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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.