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Finding the Fourth Proportional to 172,488.70, 258,668.52 and 60,140.08

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Solution

The fourth proportional to 172,488.70, 258,668.52 and 60,140.08 is: 90,187.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,488.70 : 258,668.52 = 60,140.08 : x
  2. Step 2: Convert to fraction form
    172,488.70/258,668.52 = 60,140.08/x
  3. Step 3: Cross multiply
    172,488.70x = 258,668.52 × 60,140.08
  4. Step 4: Simplify right side
    172,488.70x = 15,556,345,486.28
  5. Step 5: Solve for x
    x = 15,556,345,486.28/172,488.70
  6. Step 6: Final answer
    x = 90,187.62

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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.