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Finding the Fourth Proportional to 124,699, 172,022.96 and 73,687.06

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Solution

The fourth proportional to 124,699, 172,022.96 and 73,687.06 is: 101,651.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,699 : 172,022.96 = 73,687.06 : x
  2. Step 2: Convert to fraction form
    124,699/172,022.96 = 73,687.06/x
  3. Step 3: Cross multiply
    124,699x = 172,022.96 × 73,687.06
  4. Step 4: Simplify right side
    124,699x = 12,675,866,174.90
  5. Step 5: Solve for x
    x = 12,675,866,174.90/124,699
  6. Step 6: Final answer
    x = 101,651.71

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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.