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Finding the Fourth Proportional to 139,111.40, 192,073.02 and 109,996.40

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Solution

The fourth proportional to 139,111.40, 192,073.02 and 109,996.40 is: 151,873.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,111.40 : 192,073.02 = 109,996.40 : x
  2. Step 2: Convert to fraction form
    139,111.40/192,073.02 = 109,996.40/x
  3. Step 3: Cross multiply
    139,111.40x = 192,073.02 × 109,996.40
  4. Step 4: Simplify right side
    139,111.40x = 21,127,340,737.13
  5. Step 5: Solve for x
    x = 21,127,340,737.13/139,111.40
  6. Step 6: Final answer
    x = 151,873.54

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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.