Home / 137,102.82-189,158.84-76,665.30

Finding the Fourth Proportional to 137,102.82, 189,158.84 and 76,665.30

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Solution

The fourth proportional to 137,102.82, 189,158.84 and 76,665.30 is: 105,774.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,102.82 : 189,158.84 = 76,665.30 : x
  2. Step 2: Convert to fraction form
    137,102.82/189,158.84 = 76,665.30/x
  3. Step 3: Cross multiply
    137,102.82x = 189,158.84 × 76,665.30
  4. Step 4: Simplify right side
    137,102.82x = 14,501,919,216.25
  5. Step 5: Solve for x
    x = 14,501,919,216.25/137,102.82
  6. Step 6: Final answer
    x = 105,774.04

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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.