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Finding the Fourth Proportional to 143,802.30, 215,521.20 and 54,937.20

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Solution

The fourth proportional to 143,802.30, 215,521.20 and 54,937.20 is: 82,336.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,802.30 : 215,521.20 = 54,937.20 : x
  2. Step 2: Convert to fraction form
    143,802.30/215,521.20 = 54,937.20/x
  3. Step 3: Cross multiply
    143,802.30x = 215,521.20 × 54,937.20
  4. Step 4: Simplify right side
    143,802.30x = 11,840,131,268.64
  5. Step 5: Solve for x
    x = 11,840,131,268.64/143,802.30
  6. Step 6: Final answer
    x = 82,336.17

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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.