Home / 102,285.92-141,337.64-79,683.28

Finding the Fourth Proportional to 102,285.92, 141,337.64 and 79,683.28

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Solution

The fourth proportional to 102,285.92, 141,337.64 and 79,683.28 is: 110,105.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,285.92 : 141,337.64 = 79,683.28 : x
  2. Step 2: Convert to fraction form
    102,285.92/141,337.64 = 79,683.28/x
  3. Step 3: Cross multiply
    102,285.92x = 141,337.64 × 79,683.28
  4. Step 4: Simplify right side
    102,285.92x = 11,262,246,742.66
  5. Step 5: Solve for x
    x = 11,262,246,742.66/102,285.92
  6. Step 6: Final answer
    x = 110,105.54

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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.