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Finding the Fourth Proportional to 144,496.40, 216,658.20 and 74,512.40

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Solution

The fourth proportional to 144,496.40, 216,658.20 and 74,512.40 is: 111,724.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,496.40 : 216,658.20 = 74,512.40 : x
  2. Step 2: Convert to fraction form
    144,496.40/216,658.20 = 74,512.40/x
  3. Step 3: Cross multiply
    144,496.40x = 216,658.20 × 74,512.40
  4. Step 4: Simplify right side
    144,496.40x = 16,143,722,461.68
  5. Step 5: Solve for x
    x = 16,143,722,461.68/144,496.40
  6. Step 6: Final answer
    x = 111,724.05

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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.