Home / 128,593.04-177,458.11-72,004.41

Finding the Fourth Proportional to 128,593.04, 177,458.11 and 72,004.41

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Solution

The fourth proportional to 128,593.04, 177,458.11 and 72,004.41 is: 99,365.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,593.04 : 177,458.11 = 72,004.41 : x
  2. Step 2: Convert to fraction form
    128,593.04/177,458.11 = 72,004.41/x
  3. Step 3: Cross multiply
    128,593.04x = 177,458.11 × 72,004.41
  4. Step 4: Simplify right side
    128,593.04x = 12,777,766,330.25
  5. Step 5: Solve for x
    x = 12,777,766,330.25/128,593.04
  6. Step 6: Final answer
    x = 99,365.93

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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.