Home / 128,936.84-177,887.22-84,250.76

Finding the Fourth Proportional to 128,936.84, 177,887.22 and 84,250.76

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Solution

The fourth proportional to 128,936.84, 177,887.22 and 84,250.76 is: 116,236.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,936.84 : 177,887.22 = 84,250.76 : x
  2. Step 2: Convert to fraction form
    128,936.84/177,887.22 = 84,250.76/x
  3. Step 3: Cross multiply
    128,936.84x = 177,887.22 × 84,250.76
  4. Step 4: Simplify right side
    128,936.84x = 14,987,133,479.29
  5. Step 5: Solve for x
    x = 14,987,133,479.29/128,936.84
  6. Step 6: Final answer
    x = 116,236.24

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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.