Home / 128,558.16-177,351.35-83,250.74

Finding the Fourth Proportional to 128,558.16, 177,351.35 and 83,250.74

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Solution

The fourth proportional to 128,558.16, 177,351.35 and 83,250.74 is: 114,847.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,558.16 : 177,351.35 = 83,250.74 : x
  2. Step 2: Convert to fraction form
    128,558.16/177,351.35 = 83,250.74/x
  3. Step 3: Cross multiply
    128,558.16x = 177,351.35 × 83,250.74
  4. Step 4: Simplify right side
    128,558.16x = 14,764,630,391.17
  5. Step 5: Solve for x
    x = 14,764,630,391.17/128,558.16
  6. Step 6: Final answer
    x = 114,847.86

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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.