Home / 102,115.57-140,919.60-56,792.44

Finding the Fourth Proportional to 102,115.57, 140,919.60 and 56,792.44

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Solution

The fourth proportional to 102,115.57, 140,919.60 and 56,792.44 is: 78,373.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,115.57 : 140,919.60 = 56,792.44 : x
  2. Step 2: Convert to fraction form
    102,115.57/140,919.60 = 56,792.44/x
  3. Step 3: Cross multiply
    102,115.57x = 140,919.60 × 56,792.44
  4. Step 4: Simplify right side
    102,115.57x = 8,003,167,927.82
  5. Step 5: Solve for x
    x = 8,003,167,927.82/102,115.57
  6. Step 6: Final answer
    x = 78,373.63

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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.