Home / 120,431.10-166,187.85-65,972.48

Finding the Fourth Proportional to 120,431.10, 166,187.85 and 65,972.48

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Solution

The fourth proportional to 120,431.10, 166,187.85 and 65,972.48 is: 91,038.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,431.10 : 166,187.85 = 65,972.48 : x
  2. Step 2: Convert to fraction form
    120,431.10/166,187.85 = 65,972.48/x
  3. Step 3: Cross multiply
    120,431.10x = 166,187.85 × 65,972.48
  4. Step 4: Simplify right side
    120,431.10x = 10,963,823,903.13
  5. Step 5: Solve for x
    x = 10,963,823,903.13/120,431.10
  6. Step 6: Final answer
    x = 91,038.14

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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.