Home / 105,217.20-145,202.88-57,472.80

Finding the Fourth Proportional to 105,217.20, 145,202.88 and 57,472.80

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Solution

The fourth proportional to 105,217.20, 145,202.88 and 57,472.80 is: 79,314.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,217.20 : 145,202.88 = 57,472.80 : x
  2. Step 2: Convert to fraction form
    105,217.20/145,202.88 = 57,472.80/x
  3. Step 3: Cross multiply
    105,217.20x = 145,202.88 × 57,472.80
  4. Step 4: Simplify right side
    105,217.20x = 8,345,216,081.66
  5. Step 5: Solve for x
    x = 8,345,216,081.66/105,217.20
  6. Step 6: Final answer
    x = 79,314.18

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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.