Home / 128,504.74-177,417.03-82,583

Finding the Fourth Proportional to 128,504.74, 177,417.03 and 82,583

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Solution

The fourth proportional to 128,504.74, 177,417.03 and 82,583 is: 114,016.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,504.74 : 177,417.03 = 82,583 : x
  2. Step 2: Convert to fraction form
    128,504.74/177,417.03 = 82,583/x
  3. Step 3: Cross multiply
    128,504.74x = 177,417.03 × 82,583
  4. Step 4: Simplify right side
    128,504.74x = 14,651,630,588.49
  5. Step 5: Solve for x
    x = 14,651,630,588.49/128,504.74
  6. Step 6: Final answer
    x = 114,016.27

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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.