Home / 128,416.75-177,215.40-71,060.23

Finding the Fourth Proportional to 128,416.75, 177,215.40 and 71,060.23

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Solution

The fourth proportional to 128,416.75, 177,215.40 and 71,060.23 is: 98,063.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,416.75 : 177,215.40 = 71,060.23 : x
  2. Step 2: Convert to fraction form
    128,416.75/177,215.40 = 71,060.23/x
  3. Step 3: Cross multiply
    128,416.75x = 177,215.40 × 71,060.23
  4. Step 4: Simplify right side
    128,416.75x = 12,592,967,083.54
  5. Step 5: Solve for x
    x = 12,592,967,083.54/128,416.75
  6. Step 6: Final answer
    x = 98,063.28

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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.