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Finding the Fourth Proportional to 104,144.99, 143,719.86 and 56,398.19

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Solution

The fourth proportional to 104,144.99, 143,719.86 and 56,398.19 is: 77,829.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,144.99 : 143,719.86 = 56,398.19 : x
  2. Step 2: Convert to fraction form
    104,144.99/143,719.86 = 56,398.19/x
  3. Step 3: Cross multiply
    104,144.99x = 143,719.86 × 56,398.19
  4. Step 4: Simplify right side
    104,144.99x = 8,105,539,252.45
  5. Step 5: Solve for x
    x = 8,105,539,252.45/104,144.99
  6. Step 6: Final answer
    x = 77,829.38

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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.