Home / 139,904.28-193,062.29-76,240.71

Finding the Fourth Proportional to 139,904.28, 193,062.29 and 76,240.71

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Solution

The fourth proportional to 139,904.28, 193,062.29 and 76,240.71 is: 105,209.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,904.28 : 193,062.29 = 76,240.71 : x
  2. Step 2: Convert to fraction form
    139,904.28/193,062.29 = 76,240.71/x
  3. Step 3: Cross multiply
    139,904.28x = 193,062.29 × 76,240.71
  4. Step 4: Simplify right side
    139,904.28x = 14,719,205,682.62
  5. Step 5: Solve for x
    x = 14,719,205,682.62/139,904.28
  6. Step 6: Final answer
    x = 105,209.12

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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.