Home / 145,507.32-218,187-66,553.88

Finding the Fourth Proportional to 145,507.32, 218,187 and 66,553.88

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Solution

The fourth proportional to 145,507.32, 218,187 and 66,553.88 is: 99,796.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,507.32 : 218,187 = 66,553.88 : x
  2. Step 2: Convert to fraction form
    145,507.32/218,187 = 66,553.88/x
  3. Step 3: Cross multiply
    145,507.32x = 218,187 × 66,553.88
  4. Step 4: Simplify right side
    145,507.32x = 14,521,190,324.63
  5. Step 5: Solve for x
    x = 14,521,190,324.63/145,507.32
  6. Step 6: Final answer
    x = 99,796.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.