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Finding the Fourth Proportional to 173,586.59, 259,959.39 and 120,128.76

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Solution

The fourth proportional to 173,586.59, 259,959.39 and 120,128.76 is: 179,902.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,586.59 : 259,959.39 = 120,128.76 : x
  2. Step 2: Convert to fraction form
    173,586.59/259,959.39 = 120,128.76/x
  3. Step 3: Cross multiply
    173,586.59x = 259,959.39 × 120,128.76
  4. Step 4: Simplify right side
    173,586.59x = 31,228,599,171.06
  5. Step 5: Solve for x
    x = 31,228,599,171.06/173,586.59
  6. Step 6: Final answer
    x = 179,902.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.