Home / 128,666.33-177,556.98-71,304.46

Finding the Fourth Proportional to 128,666.33, 177,556.98 and 71,304.46

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Solution

The fourth proportional to 128,666.33, 177,556.98 and 71,304.46 is: 98,398.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,666.33 : 177,556.98 = 71,304.46 : x
  2. Step 2: Convert to fraction form
    128,666.33/177,556.98 = 71,304.46/x
  3. Step 3: Cross multiply
    128,666.33x = 177,556.98 × 71,304.46
  4. Step 4: Simplify right side
    128,666.33x = 12,660,605,231.30
  5. Step 5: Solve for x
    x = 12,660,605,231.30/128,666.33
  6. Step 6: Final answer
    x = 98,398.74

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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.