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Finding the Fourth Proportional to 128,093.84, 176,772.48 and 80,349.20

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Solution

The fourth proportional to 128,093.84, 176,772.48 and 80,349.20 is: 110,883.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,093.84 : 176,772.48 = 80,349.20 : x
  2. Step 2: Convert to fraction form
    128,093.84/176,772.48 = 80,349.20/x
  3. Step 3: Cross multiply
    128,093.84x = 176,772.48 × 80,349.20
  4. Step 4: Simplify right side
    128,093.84x = 14,203,527,350.02
  5. Step 5: Solve for x
    x = 14,203,527,350.02/128,093.84
  6. Step 6: Final answer
    x = 110,883.77

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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.