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Finding the Fourth Proportional to 128,169.70, 176,883.96 and 94,333.12

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Solution

The fourth proportional to 128,169.70, 176,883.96 and 94,333.12 is: 130,186.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,169.70 : 176,883.96 = 94,333.12 : x
  2. Step 2: Convert to fraction form
    128,169.70/176,883.96 = 94,333.12/x
  3. Step 3: Cross multiply
    128,169.70x = 176,883.96 × 94,333.12
  4. Step 4: Simplify right side
    128,169.70x = 16,686,015,824.76
  5. Step 5: Solve for x
    x = 16,686,015,824.76/128,169.70
  6. Step 6: Final answer
    x = 130,186.90

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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.