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Finding the Fourth Proportional to 143,841.16, 215,622.42 and 55,026.28

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Solution

The fourth proportional to 143,841.16, 215,622.42 and 55,026.28 is: 82,486.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,841.16 : 215,622.42 = 55,026.28 : x
  2. Step 2: Convert to fraction form
    143,841.16/215,622.42 = 55,026.28/x
  3. Step 3: Cross multiply
    143,841.16x = 215,622.42 × 55,026.28
  4. Step 4: Simplify right side
    143,841.16x = 11,864,899,657.20
  5. Step 5: Solve for x
    x = 11,864,899,657.20/143,841.16
  6. Step 6: Final answer
    x = 82,486.12

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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.