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Finding the Fourth Proportional to 143,585.60, 198,146.40 and 83,969.60

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Solution

The fourth proportional to 143,585.60, 198,146.40 and 83,969.60 is: 115,877.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,585.60 : 198,146.40 = 83,969.60 : x
  2. Step 2: Convert to fraction form
    143,585.60/198,146.40 = 83,969.60/x
  3. Step 3: Cross multiply
    143,585.60x = 198,146.40 × 83,969.60
  4. Step 4: Simplify right side
    143,585.60x = 16,638,273,949.44
  5. Step 5: Solve for x
    x = 16,638,273,949.44/143,585.60
  6. Step 6: Final answer
    x = 115,877.04

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1.5x scale

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.