Home / 128,329.52-177,143.36-114,876.43

Finding the Fourth Proportional to 128,329.52, 177,143.36 and 114,876.43

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Solution

The fourth proportional to 128,329.52, 177,143.36 and 114,876.43 is: 158,573.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,329.52 : 177,143.36 = 114,876.43 : x
  2. Step 2: Convert to fraction form
    128,329.52/177,143.36 = 114,876.43/x
  3. Step 3: Cross multiply
    128,329.52x = 177,143.36 × 114,876.43
  4. Step 4: Simplify right side
    128,329.52x = 20,349,595,777.76
  5. Step 5: Solve for x
    x = 20,349,595,777.76/128,329.52
  6. Step 6: Final answer
    x = 158,573.00

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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.