Home / 128,222.49-176,953.82-77,251.27

Finding the Fourth Proportional to 128,222.49, 176,953.82 and 77,251.27

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Solution

The fourth proportional to 128,222.49, 176,953.82 and 77,251.27 is: 106,610.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,222.49 : 176,953.82 = 77,251.27 : x
  2. Step 2: Convert to fraction form
    128,222.49/176,953.82 = 77,251.27/x
  3. Step 3: Cross multiply
    128,222.49x = 176,953.82 × 77,251.27
  4. Step 4: Simplify right side
    128,222.49x = 13,669,906,829.50
  5. Step 5: Solve for x
    x = 13,669,906,829.50/128,222.49
  6. Step 6: Final answer
    x = 106,610.83

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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.