Home / 139,680.90-192,753.68-76,018.55

Finding the Fourth Proportional to 139,680.90, 192,753.68 and 76,018.55

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Solution

The fourth proportional to 139,680.90, 192,753.68 and 76,018.55 is: 104,902.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,680.90 : 192,753.68 = 76,018.55 : x
  2. Step 2: Convert to fraction form
    139,680.90/192,753.68 = 76,018.55/x
  3. Step 3: Cross multiply
    139,680.90x = 192,753.68 × 76,018.55
  4. Step 4: Simplify right side
    139,680.90x = 14,652,853,916.90
  5. Step 5: Solve for x
    x = 14,652,853,916.90/139,680.90
  6. Step 6: Final answer
    x = 104,902.34

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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.