Home / 128,561.66-177,356.17-83,254.24

Finding the Fourth Proportional to 128,561.66, 177,356.17 and 83,254.24

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Solution

The fourth proportional to 128,561.66, 177,356.17 and 83,254.24 is: 114,852.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,561.66 : 177,356.17 = 83,254.24 : x
  2. Step 2: Convert to fraction form
    128,561.66/177,356.17 = 83,254.24/x
  3. Step 3: Cross multiply
    128,561.66x = 177,356.17 × 83,254.24
  4. Step 4: Simplify right side
    128,561.66x = 14,765,653,142.66
  5. Step 5: Solve for x
    x = 14,765,653,142.66/128,561.66
  6. Step 6: Final answer
    x = 114,852.70

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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.