Home / 120,710.76-166,563.81-72,301.35

Finding the Fourth Proportional to 120,710.76, 166,563.81 and 72,301.35

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Solution

The fourth proportional to 120,710.76, 166,563.81 and 72,301.35 is: 99,765.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,710.76 : 166,563.81 = 72,301.35 : x
  2. Step 2: Convert to fraction form
    120,710.76/166,563.81 = 72,301.35/x
  3. Step 3: Cross multiply
    120,710.76x = 166,563.81 × 72,301.35
  4. Step 4: Simplify right side
    120,710.76x = 12,042,788,324.14
  5. Step 5: Solve for x
    x = 12,042,788,324.14/120,710.76
  6. Step 6: Final answer
    x = 99,765.66

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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.