Home / 139,487.12-192,477.84-82,887.60

Finding the Fourth Proportional to 139,487.12, 192,477.84 and 82,887.60

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Solution

The fourth proportional to 139,487.12, 192,477.84 and 82,887.60 is: 114,376.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,487.12 : 192,477.84 = 82,887.60 : x
  2. Step 2: Convert to fraction form
    139,487.12/192,477.84 = 82,887.60/x
  3. Step 3: Cross multiply
    139,487.12x = 192,477.84 × 82,887.60
  4. Step 4: Simplify right side
    139,487.12x = 15,954,026,210.78
  5. Step 5: Solve for x
    x = 15,954,026,210.78/139,487.12
  6. Step 6: Final answer
    x = 114,376.34

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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.