Home / 118,941.36-164,143.81-65,228.30

Finding the Fourth Proportional to 118,941.36, 164,143.81 and 65,228.30

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Solution

The fourth proportional to 118,941.36, 164,143.81 and 65,228.30 is: 90,017.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,941.36 : 164,143.81 = 65,228.30 : x
  2. Step 2: Convert to fraction form
    118,941.36/164,143.81 = 65,228.30/x
  3. Step 3: Cross multiply
    118,941.36x = 164,143.81 × 65,228.30
  4. Step 4: Simplify right side
    118,941.36x = 10,706,821,929.11
  5. Step 5: Solve for x
    x = 10,706,821,929.11/118,941.36
  6. Step 6: Final answer
    x = 90,017.65

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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.