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Finding the Fourth Proportional to 144,638.60, 216,957.90 and 65,906.60

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Solution

The fourth proportional to 144,638.60, 216,957.90 and 65,906.60 is: 98,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,638.60 : 216,957.90 = 65,906.60 : x
  2. Step 2: Convert to fraction form
    144,638.60/216,957.90 = 65,906.60/x
  3. Step 3: Cross multiply
    144,638.60x = 216,957.90 × 65,906.60
  4. Step 4: Simplify right side
    144,638.60x = 14,298,957,532.14
  5. Step 5: Solve for x
    x = 14,298,957,532.14/144,638.60
  6. Step 6: Final answer
    x = 98,859.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.