Home / 105,519.54-145,619.58-57,772.74

Finding the Fourth Proportional to 105,519.54, 145,619.58 and 57,772.74

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Solution

The fourth proportional to 105,519.54, 145,619.58 and 57,772.74 is: 79,727.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,519.54 : 145,619.58 = 57,772.74 : x
  2. Step 2: Convert to fraction form
    105,519.54/145,619.58 = 57,772.74/x
  3. Step 3: Cross multiply
    105,519.54x = 145,619.58 × 57,772.74
  4. Step 4: Simplify right side
    105,519.54x = 8,412,842,134.25
  5. Step 5: Solve for x
    x = 8,412,842,134.25/105,519.54
  6. Step 6: Final answer
    x = 79,727.81

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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.