Home / 128,084.85-176,756.41-74,383.06

Finding the Fourth Proportional to 128,084.85, 176,756.41 and 74,383.06

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Solution

The fourth proportional to 128,084.85, 176,756.41 and 74,383.06 is: 102,648.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,084.85 : 176,756.41 = 74,383.06 : x
  2. Step 2: Convert to fraction form
    128,084.85/176,756.41 = 74,383.06/x
  3. Step 3: Cross multiply
    128,084.85x = 176,756.41 × 74,383.06
  4. Step 4: Simplify right side
    128,084.85x = 13,147,682,650.41
  5. Step 5: Solve for x
    x = 13,147,682,650.41/128,084.85
  6. Step 6: Final answer
    x = 102,648.23

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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.