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Finding the Fourth Proportional to 102,029.76, 140,800.32 and 57,317.76

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Solution

The fourth proportional to 102,029.76, 140,800.32 and 57,317.76 is: 79,098.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,029.76 : 140,800.32 = 57,317.76 : x
  2. Step 2: Convert to fraction form
    102,029.76/140,800.32 = 57,317.76/x
  3. Step 3: Cross multiply
    102,029.76x = 140,800.32 × 57,317.76
  4. Step 4: Simplify right side
    102,029.76x = 8,070,358,949.68
  5. Step 5: Solve for x
    x = 8,070,358,949.68/102,029.76
  6. Step 6: Final answer
    x = 79,098.09

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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.