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Finding the Fourth Proportional to 116,668.86, 160,960.92 and 76,405.58

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Solution

The fourth proportional to 116,668.86, 160,960.92 and 76,405.58 is: 105,412.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,668.86 : 160,960.92 = 76,405.58 : x
  2. Step 2: Convert to fraction form
    116,668.86/160,960.92 = 76,405.58/x
  3. Step 3: Cross multiply
    116,668.86x = 160,960.92 × 76,405.58
  4. Step 4: Simplify right side
    116,668.86x = 12,298,312,391.99
  5. Step 5: Solve for x
    x = 12,298,312,391.99/116,668.86
  6. Step 6: Final answer
    x = 105,412.13

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1.5x scale

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.