Home / 140,428.13-193,790.81-76,766.38

Finding the Fourth Proportional to 140,428.13, 193,790.81 and 76,766.38

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Solution

The fourth proportional to 140,428.13, 193,790.81 and 76,766.38 is: 105,937.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,428.13 : 193,790.81 = 76,766.38 : x
  2. Step 2: Convert to fraction form
    140,428.13/193,790.81 = 76,766.38/x
  3. Step 3: Cross multiply
    140,428.13x = 193,790.81 × 76,766.38
  4. Step 4: Simplify right side
    140,428.13x = 14,876,618,668.41
  5. Step 5: Solve for x
    x = 14,876,618,668.41/140,428.13
  6. Step 6: Final answer
    x = 105,937.60

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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.