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Finding the Fourth Proportional to 104,145.17, 143,720.11 and 56,398.37

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Solution

The fourth proportional to 104,145.17, 143,720.11 and 56,398.37 is: 77,829.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,145.17 : 143,720.11 = 56,398.37 : x
  2. Step 2: Convert to fraction form
    104,145.17/143,720.11 = 56,398.37/x
  3. Step 3: Cross multiply
    104,145.17x = 143,720.11 × 56,398.37
  4. Step 4: Simplify right side
    104,145.17x = 8,105,579,292.12
  5. Step 5: Solve for x
    x = 8,105,579,292.12/104,145.17
  6. Step 6: Final answer
    x = 77,829.63

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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.