Home / 105,321.80-145,344.12-57,575.14

Finding the Fourth Proportional to 105,321.80, 145,344.12 and 57,575.14

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Solution

The fourth proportional to 105,321.80, 145,344.12 and 57,575.14 is: 79,453.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,321.80 : 145,344.12 = 57,575.14 : x
  2. Step 2: Convert to fraction form
    105,321.80/145,344.12 = 57,575.14/x
  3. Step 3: Cross multiply
    105,321.80x = 145,344.12 × 57,575.14
  4. Step 4: Simplify right side
    105,321.80x = 8,368,208,057.18
  5. Step 5: Solve for x
    x = 8,368,208,057.18/105,321.80
  6. Step 6: Final answer
    x = 79,453.71

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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.