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Finding the Fourth Proportional to 144,492.60, 216,738.90 and 65,760.60

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Solution

The fourth proportional to 144,492.60, 216,738.90 and 65,760.60 is: 98,640.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,492.60 : 216,738.90 = 65,760.60 : x
  2. Step 2: Convert to fraction form
    144,492.60/216,738.90 = 65,760.60/x
  3. Step 3: Cross multiply
    144,492.60x = 216,738.90 × 65,760.60
  4. Step 4: Simplify right side
    144,492.60x = 14,252,880,107.34
  5. Step 5: Solve for x
    x = 14,252,880,107.34/144,492.60
  6. Step 6: Final answer
    x = 98,640.90

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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.