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Finding the Fourth Proportional to 173,128.80, 259,628.40 and 60,765.60

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Solution

The fourth proportional to 173,128.80, 259,628.40 and 60,765.60 is: 91,125.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,128.80 : 259,628.40 = 60,765.60 : x
  2. Step 2: Convert to fraction form
    173,128.80/259,628.40 = 60,765.60/x
  3. Step 3: Cross multiply
    173,128.80x = 259,628.40 × 60,765.60
  4. Step 4: Simplify right side
    173,128.80x = 15,776,475,503.04
  5. Step 5: Solve for x
    x = 15,776,475,503.04/173,128.80
  6. Step 6: Final answer
    x = 91,125.66

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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.