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Finding the Fourth Proportional to 115,379.52, 172,950.48 and 83,710.68

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Solution

The fourth proportional to 115,379.52, 172,950.48 and 83,710.68 is: 125,479.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,379.52 : 172,950.48 = 83,710.68 : x
  2. Step 2: Convert to fraction form
    115,379.52/172,950.48 = 83,710.68/x
  3. Step 3: Cross multiply
    115,379.52x = 172,950.48 × 83,710.68
  4. Step 4: Simplify right side
    115,379.52x = 14,477,802,287.13
  5. Step 5: Solve for x
    x = 14,477,802,287.13/115,379.52
  6. Step 6: Final answer
    x = 125,479.83

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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.