Home / 128,100.24-176,634.54-82,718.64

Finding the Fourth Proportional to 128,100.24, 176,634.54 and 82,718.64

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Solution

The fourth proportional to 128,100.24, 176,634.54 and 82,718.64 is: 114,058.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,100.24 : 176,634.54 = 82,718.64 : x
  2. Step 2: Convert to fraction form
    128,100.24/176,634.54 = 82,718.64/x
  3. Step 3: Cross multiply
    128,100.24x = 176,634.54 × 82,718.64
  4. Step 4: Simplify right side
    128,100.24x = 14,610,968,925.83
  5. Step 5: Solve for x
    x = 14,610,968,925.83/128,100.24
  6. Step 6: Final answer
    x = 114,058.87

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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.