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Finding the Fourth Proportional to 118,941.40, 164,138.70 and 65,225.08

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Solution

The fourth proportional to 118,941.40, 164,138.70 and 65,225.08 is: 90,010.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,941.40 : 164,138.70 = 65,225.08 : x
  2. Step 2: Convert to fraction form
    118,941.40/164,138.70 = 65,225.08/x
  3. Step 3: Cross multiply
    118,941.40x = 164,138.70 × 65,225.08
  4. Step 4: Simplify right side
    118,941.40x = 10,705,959,838.60
  5. Step 5: Solve for x
    x = 10,705,959,838.60/118,941.40
  6. Step 6: Final answer
    x = 90,010.37

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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.