Home / 106,949.60-147,433.26-81,411.48

Finding the Fourth Proportional to 106,949.60, 147,433.26 and 81,411.48

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Solution

The fourth proportional to 106,949.60, 147,433.26 and 81,411.48 is: 112,228.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,949.60 : 147,433.26 = 81,411.48 : x
  2. Step 2: Convert to fraction form
    106,949.60/147,433.26 = 81,411.48/x
  3. Step 3: Cross multiply
    106,949.60x = 147,433.26 × 81,411.48
  4. Step 4: Simplify right side
    106,949.60x = 12,002,759,897.82
  5. Step 5: Solve for x
    x = 12,002,759,897.82/106,949.60
  6. Step 6: Final answer
    x = 112,228.19

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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.