Home / 120,563.28-166,342.80-69,572.16

Finding the Fourth Proportional to 120,563.28, 166,342.80 and 69,572.16

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Solution

The fourth proportional to 120,563.28, 166,342.80 and 69,572.16 is: 95,989.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,563.28 : 166,342.80 = 69,572.16 : x
  2. Step 2: Convert to fraction form
    120,563.28/166,342.80 = 69,572.16/x
  3. Step 3: Cross multiply
    120,563.28x = 166,342.80 × 69,572.16
  4. Step 4: Simplify right side
    120,563.28x = 11,572,827,896.45
  5. Step 5: Solve for x
    x = 11,572,827,896.45/120,563.28
  6. Step 6: Final answer
    x = 95,989.66

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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.