Home / 103,777.28-143,216.16-61,372.16

Finding the Fourth Proportional to 103,777.28, 143,216.16 and 61,372.16

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Solution

The fourth proportional to 103,777.28, 143,216.16 and 61,372.16 is: 84,695.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,777.28 : 143,216.16 = 61,372.16 : x
  2. Step 2: Convert to fraction form
    103,777.28/143,216.16 = 61,372.16/x
  3. Step 3: Cross multiply
    103,777.28x = 143,216.16 × 61,372.16
  4. Step 4: Simplify right side
    103,777.28x = 8,789,485,086.11
  5. Step 5: Solve for x
    x = 8,789,485,086.11/103,777.28
  6. Step 6: Final answer
    x = 84,695.66

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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.