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Finding the Fourth Proportional to 128,262.94, 176,959.71 and 82,998.19

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Solution

The fourth proportional to 128,262.94, 176,959.71 and 82,998.19 is: 114,509.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,262.94 : 176,959.71 = 82,998.19 : x
  2. Step 2: Convert to fraction form
    128,262.94/176,959.71 = 82,998.19/x
  3. Step 3: Cross multiply
    128,262.94x = 176,959.71 × 82,998.19
  4. Step 4: Simplify right side
    128,262.94x = 14,687,335,632.92
  5. Step 5: Solve for x
    x = 14,687,335,632.92/128,262.94
  6. Step 6: Final answer
    x = 114,509.58

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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.