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Finding the Fourth Proportional to 131,834.48, 181,930.48 and 71,403.72

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Solution

The fourth proportional to 131,834.48, 181,930.48 and 71,403.72 is: 98,536.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,834.48 : 181,930.48 = 71,403.72 : x
  2. Step 2: Convert to fraction form
    131,834.48/181,930.48 = 71,403.72/x
  3. Step 3: Cross multiply
    131,834.48x = 181,930.48 × 71,403.72
  4. Step 4: Simplify right side
    131,834.48x = 12,990,513,053.39
  5. Step 5: Solve for x
    x = 12,990,513,053.39/131,834.48
  6. Step 6: Final answer
    x = 98,536.54

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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.