Home / 103,912.10-143,398.22-56,165.34

Finding the Fourth Proportional to 103,912.10, 143,398.22 and 56,165.34

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Solution

The fourth proportional to 103,912.10, 143,398.22 and 56,165.34 is: 77,507.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,912.10 : 143,398.22 = 56,165.34 : x
  2. Step 2: Convert to fraction form
    103,912.10/143,398.22 = 56,165.34/x
  3. Step 3: Cross multiply
    103,912.10x = 143,398.22 × 56,165.34
  4. Step 4: Simplify right side
    103,912.10x = 8,054,009,781.69
  5. Step 5: Solve for x
    x = 8,054,009,781.69/103,912.10
  6. Step 6: Final answer
    x = 77,507.91

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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.