Home / 128,101.14-176,728.77-85,592.34

Finding the Fourth Proportional to 128,101.14, 176,728.77 and 85,592.34

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Solution

The fourth proportional to 128,101.14, 176,728.77 and 85,592.34 is: 118,083.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,101.14 : 176,728.77 = 85,592.34 : x
  2. Step 2: Convert to fraction form
    128,101.14/176,728.77 = 85,592.34/x
  3. Step 3: Cross multiply
    128,101.14x = 176,728.77 × 85,592.34
  4. Step 4: Simplify right side
    128,101.14x = 15,126,628,969.62
  5. Step 5: Solve for x
    x = 15,126,628,969.62/128,101.14
  6. Step 6: Final answer
    x = 118,083.48

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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.