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Finding the Fourth Proportional to 128,185.54, 176,944.70 and 96,446.70

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Solution

The fourth proportional to 128,185.54, 176,944.70 and 96,446.70 is: 133,133.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,185.54 : 176,944.70 = 96,446.70 : x
  2. Step 2: Convert to fraction form
    128,185.54/176,944.70 = 96,446.70/x
  3. Step 3: Cross multiply
    128,185.54x = 176,944.70 × 96,446.70
  4. Step 4: Simplify right side
    128,185.54x = 17,065,732,638.61
  5. Step 5: Solve for x
    x = 17,065,732,638.61/128,185.54
  6. Step 6: Final answer
    x = 133,133.06

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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.