Home / 143,817.96-215,726.78-66,873.32

Finding the Fourth Proportional to 143,817.96, 215,726.78 and 66,873.32

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Solution

The fourth proportional to 143,817.96, 215,726.78 and 66,873.32 is: 100,309.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,817.96 : 215,726.78 = 66,873.32 : x
  2. Step 2: Convert to fraction form
    143,817.96/215,726.78 = 66,873.32/x
  3. Step 3: Cross multiply
    143,817.96x = 215,726.78 × 66,873.32
  4. Step 4: Simplify right side
    143,817.96x = 14,426,365,991.51
  5. Step 5: Solve for x
    x = 14,426,365,991.51/143,817.96
  6. Step 6: Final answer
    x = 100,309.91

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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.