Home / 128,583.39-177,447.74-76,953.86

Finding the Fourth Proportional to 128,583.39, 177,447.74 and 76,953.86

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Solution

The fourth proportional to 128,583.39, 177,447.74 and 76,953.86 is: 106,197.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,583.39 : 177,447.74 = 76,953.86 : x
  2. Step 2: Convert to fraction form
    128,583.39/177,447.74 = 76,953.86/x
  3. Step 3: Cross multiply
    128,583.39x = 177,447.74 × 76,953.86
  4. Step 4: Simplify right side
    128,583.39x = 13,655,288,541.28
  5. Step 5: Solve for x
    x = 13,655,288,541.28/128,583.39
  6. Step 6: Final answer
    x = 106,197.92

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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.