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Finding the Fourth Proportional to 128,029.77, 176,654.70 and 73,571.42

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Solution

The fourth proportional to 128,029.77, 176,654.70 and 73,571.42 is: 101,513.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,029.77 : 176,654.70 = 73,571.42 : x
  2. Step 2: Convert to fraction form
    128,029.77/176,654.70 = 73,571.42/x
  3. Step 3: Cross multiply
    128,029.77x = 176,654.70 × 73,571.42
  4. Step 4: Simplify right side
    128,029.77x = 12,996,736,245.40
  5. Step 5: Solve for x
    x = 12,996,736,245.40/128,029.77
  6. Step 6: Final answer
    x = 101,513.39

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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.