Home / 128,824.90-177,780.11-96,502.25

Finding the Fourth Proportional to 128,824.90, 177,780.11 and 96,502.25

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Solution

The fourth proportional to 128,824.90, 177,780.11 and 96,502.25 is: 133,174.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,824.90 : 177,780.11 = 96,502.25 : x
  2. Step 2: Convert to fraction form
    128,824.90/177,780.11 = 96,502.25/x
  3. Step 3: Cross multiply
    128,824.90x = 177,780.11 × 96,502.25
  4. Step 4: Simplify right side
    128,824.90x = 17,156,180,137.74
  5. Step 5: Solve for x
    x = 17,156,180,137.74/128,824.90
  6. Step 6: Final answer
    x = 133,174.42

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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.