Home / 78,683.20-108,332.04-73,317.76

Finding the Fourth Proportional to 78,683.20, 108,332.04 and 73,317.76

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Solution

The fourth proportional to 78,683.20, 108,332.04 and 73,317.76 is: 100,944.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,683.20 : 108,332.04 = 73,317.76 : x
  2. Step 2: Convert to fraction form
    78,683.20/108,332.04 = 73,317.76/x
  3. Step 3: Cross multiply
    78,683.20x = 108,332.04 × 73,317.76
  4. Step 4: Simplify right side
    78,683.20x = 7,942,662,509.03
  5. Step 5: Solve for x
    x = 7,942,662,509.03/78,683.20
  6. Step 6: Final answer
    x = 100,944.83

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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.