Home / 128,566.16-177,362.37-83,258.75

Finding the Fourth Proportional to 128,566.16, 177,362.37 and 83,258.75

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Solution

The fourth proportional to 128,566.16, 177,362.37 and 83,258.75 is: 114,858.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,566.16 : 177,362.37 = 83,258.75 : x
  2. Step 2: Convert to fraction form
    128,566.16/177,362.37 = 83,258.75/x
  3. Step 3: Cross multiply
    128,566.16x = 177,362.37 × 83,258.75
  4. Step 4: Simplify right side
    128,566.16x = 14,766,969,223.24
  5. Step 5: Solve for x
    x = 14,766,969,223.24/128,566.16
  6. Step 6: Final answer
    x = 114,858.91

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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.