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Finding the Fourth Proportional to 104,389.54, 144,057.54 and 56,642.89

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Solution

The fourth proportional to 104,389.54, 144,057.54 and 56,642.89 is: 78,167.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,389.54 : 144,057.54 = 56,642.89 : x
  2. Step 2: Convert to fraction form
    104,389.54/144,057.54 = 56,642.89/x
  3. Step 3: Cross multiply
    104,389.54x = 144,057.54 × 56,642.89
  4. Step 4: Simplify right side
    104,389.54x = 8,159,835,391.89
  5. Step 5: Solve for x
    x = 8,159,835,391.89/104,389.54
  6. Step 6: Final answer
    x = 78,167.17

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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.