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Finding the Fourth Proportional to 139,539.38, 192,563.37 and 75,877.20

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Solution

The fourth proportional to 139,539.38, 192,563.37 and 75,877.20 is: 104,710.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,539.38 : 192,563.37 = 75,877.20 : x
  2. Step 2: Convert to fraction form
    139,539.38/192,563.37 = 75,877.20/x
  3. Step 3: Cross multiply
    139,539.38x = 192,563.37 × 75,877.20
  4. Step 4: Simplify right side
    139,539.38x = 14,611,169,338.16
  5. Step 5: Solve for x
    x = 14,611,169,338.16/139,539.38
  6. Step 6: Final answer
    x = 104,710.01

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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.