Home / 128,233.24-177,011.25-114,780.76

Finding the Fourth Proportional to 128,233.24, 177,011.25 and 114,780.76

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Solution

The fourth proportional to 128,233.24, 177,011.25 and 114,780.76 is: 158,441.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,233.24 : 177,011.25 = 114,780.76 : x
  2. Step 2: Convert to fraction form
    128,233.24/177,011.25 = 114,780.76/x
  3. Step 3: Cross multiply
    128,233.24x = 177,011.25 × 114,780.76
  4. Step 4: Simplify right side
    128,233.24x = 20,317,485,803.55
  5. Step 5: Solve for x
    x = 20,317,485,803.55/128,233.24
  6. Step 6: Final answer
    x = 158,441.65

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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.