Home / 139,627.56-192,718.26-83,071.20

Finding the Fourth Proportional to 139,627.56, 192,718.26 and 83,071.20

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Solution

The fourth proportional to 139,627.56, 192,718.26 and 83,071.20 is: 114,657.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,627.56 : 192,718.26 = 83,071.20 : x
  2. Step 2: Convert to fraction form
    139,627.56/192,718.26 = 83,071.20/x
  3. Step 3: Cross multiply
    139,627.56x = 192,718.26 × 83,071.20
  4. Step 4: Simplify right side
    139,627.56x = 16,009,337,120.11
  5. Step 5: Solve for x
    x = 16,009,337,120.11/139,627.56
  6. Step 6: Final answer
    x = 114,657.43

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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.