Home / 105,149.94-145,107.15-57,403.30

Finding the Fourth Proportional to 105,149.94, 145,107.15 and 57,403.30

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Solution

The fourth proportional to 105,149.94, 145,107.15 and 57,403.30 is: 79,216.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,149.94 : 145,107.15 = 57,403.30 : x
  2. Step 2: Convert to fraction form
    105,149.94/145,107.15 = 57,403.30/x
  3. Step 3: Cross multiply
    105,149.94x = 145,107.15 × 57,403.30
  4. Step 4: Simplify right side
    105,149.94x = 8,329,629,263.60
  5. Step 5: Solve for x
    x = 8,329,629,263.60/105,149.94
  6. Step 6: Final answer
    x = 79,216.68

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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.