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Finding the Fourth Proportional to 144,420.70, 216,450.30 and 69,520.78

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Solution

The fourth proportional to 144,420.70, 216,450.30 and 69,520.78 is: 104,194.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,420.70 : 216,450.30 = 69,520.78 : x
  2. Step 2: Convert to fraction form
    144,420.70/216,450.30 = 69,520.78/x
  3. Step 3: Cross multiply
    144,420.70x = 216,450.30 × 69,520.78
  4. Step 4: Simplify right side
    144,420.70x = 15,047,793,687.23
  5. Step 5: Solve for x
    x = 15,047,793,687.23/144,420.70
  6. Step 6: Final answer
    x = 104,194.16

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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.