Home / 128,440.54-177,130.87-110,285.60

Finding the Fourth Proportional to 128,440.54, 177,130.87 and 110,285.60

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Solution

The fourth proportional to 128,440.54, 177,130.87 and 110,285.60 is: 152,093.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,440.54 : 177,130.87 = 110,285.60 : x
  2. Step 2: Convert to fraction form
    128,440.54/177,130.87 = 110,285.60/x
  3. Step 3: Cross multiply
    128,440.54x = 177,130.87 × 110,285.60
  4. Step 4: Simplify right side
    128,440.54x = 19,534,983,115.10
  5. Step 5: Solve for x
    x = 19,534,983,115.10/128,440.54
  6. Step 6: Final answer
    x = 152,093.60

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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.