Home / 139,904.56-193,062.60-76,240.96

Finding the Fourth Proportional to 139,904.56, 193,062.60 and 76,240.96

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Solution

The fourth proportional to 139,904.56, 193,062.60 and 76,240.96 is: 105,209.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,904.56 : 193,062.60 = 76,240.96 : x
  2. Step 2: Convert to fraction form
    139,904.56/193,062.60 = 76,240.96/x
  3. Step 3: Cross multiply
    139,904.56x = 193,062.60 × 76,240.96
  4. Step 4: Simplify right side
    139,904.56x = 14,719,277,964.10
  5. Step 5: Solve for x
    x = 14,719,277,964.10/139,904.56
  6. Step 6: Final answer
    x = 105,209.42

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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.