Home / 128,534.56-177,384.48-80,770.24

Finding the Fourth Proportional to 128,534.56, 177,384.48 and 80,770.24

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Solution

The fourth proportional to 128,534.56, 177,384.48 and 80,770.24 is: 111,467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,534.56 : 177,384.48 = 80,770.24 : x
  2. Step 2: Convert to fraction form
    128,534.56/177,384.48 = 80,770.24/x
  3. Step 3: Cross multiply
    128,534.56x = 177,384.48 × 80,770.24
  4. Step 4: Simplify right side
    128,534.56x = 14,327,387,021.88
  5. Step 5: Solve for x
    x = 14,327,387,021.88/128,534.56
  6. Step 6: Final answer
    x = 111,467.20

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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.