Home / 128,520.51-177,602.29-96,634.05

Finding the Fourth Proportional to 128,520.51, 177,602.29 and 96,634.05

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Solution

The fourth proportional to 128,520.51, 177,602.29 and 96,634.05 is: 133,538.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,520.51 : 177,602.29 = 96,634.05 : x
  2. Step 2: Convert to fraction form
    128,520.51/177,602.29 = 96,634.05/x
  3. Step 3: Cross multiply
    128,520.51x = 177,602.29 × 96,634.05
  4. Step 4: Simplify right side
    128,520.51x = 17,162,427,664.38
  5. Step 5: Solve for x
    x = 17,162,427,664.38/128,520.51
  6. Step 6: Final answer
    x = 133,538.44

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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.