Home / 128,093.18-176,768.76-71,504.50

Finding the Fourth Proportional to 128,093.18, 176,768.76 and 71,504.50

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Solution

The fourth proportional to 128,093.18, 176,768.76 and 71,504.50 is: 98,676.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,093.18 : 176,768.76 = 71,504.50 : x
  2. Step 2: Convert to fraction form
    128,093.18/176,768.76 = 71,504.50/x
  3. Step 3: Cross multiply
    128,093.18x = 176,768.76 × 71,504.50
  4. Step 4: Simplify right side
    128,093.18x = 12,639,761,799.42
  5. Step 5: Solve for x
    x = 12,639,761,799.42/128,093.18
  6. Step 6: Final answer
    x = 98,676.31

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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.