Home / 128,766.04-177,797.82-83,465.56

Finding the Fourth Proportional to 128,766.04, 177,797.82 and 83,465.56

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Solution

The fourth proportional to 128,766.04, 177,797.82 and 83,465.56 is: 115,247.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,766.04 : 177,797.82 = 83,465.56 : x
  2. Step 2: Convert to fraction form
    128,766.04/177,797.82 = 83,465.56/x
  3. Step 3: Cross multiply
    128,766.04x = 177,797.82 × 83,465.56
  4. Step 4: Simplify right side
    128,766.04x = 14,839,994,613.08
  5. Step 5: Solve for x
    x = 14,839,994,613.08/128,766.04
  6. Step 6: Final answer
    x = 115,247.74

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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.