Home / 128,475.31-177,178.79-110,320.33

Finding the Fourth Proportional to 128,475.31, 177,178.79 and 110,320.33

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Solution

The fourth proportional to 128,475.31, 177,178.79 and 110,320.33 is: 152,141.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,475.31 : 177,178.79 = 110,320.33 : x
  2. Step 2: Convert to fraction form
    128,475.31/177,178.79 = 110,320.33/x
  3. Step 3: Cross multiply
    128,475.31x = 177,178.79 × 110,320.33
  4. Step 4: Simplify right side
    128,475.31x = 19,546,422,581.80
  5. Step 5: Solve for x
    x = 19,546,422,581.80/128,475.31
  6. Step 6: Final answer
    x = 152,141.47

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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.