Home / 139,639.19-192,701.16-75,977.24

Finding the Fourth Proportional to 139,639.19, 192,701.16 and 75,977.24

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Solution

The fourth proportional to 139,639.19, 192,701.16 and 75,977.24 is: 104,848.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,639.19 : 192,701.16 = 75,977.24 : x
  2. Step 2: Convert to fraction form
    139,639.19/192,701.16 = 75,977.24/x
  3. Step 3: Cross multiply
    139,639.19x = 192,701.16 × 75,977.24
  4. Step 4: Simplify right side
    139,639.19x = 14,640,901,318.09
  5. Step 5: Solve for x
    x = 14,640,901,318.09/139,639.19
  6. Step 6: Final answer
    x = 104,848.09

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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.