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Finding the Fourth Proportional to 118,813.79, 163,963.00 and 65,100.85

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Solution

The fourth proportional to 118,813.79, 163,963.00 and 65,100.85 is: 89,839.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,813.79 : 163,963.00 = 65,100.85 : x
  2. Step 2: Convert to fraction form
    118,813.79/163,963.00 = 65,100.85/x
  3. Step 3: Cross multiply
    118,813.79x = 163,963.00 × 65,100.85
  4. Step 4: Simplify right side
    118,813.79x = 10,674,130,340.02
  5. Step 5: Solve for x
    x = 10,674,130,340.02/118,813.79
  6. Step 6: Final answer
    x = 89,839.15

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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.