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Finding the Fourth Proportional to 144,328.60, 216,201.30 and 100,005.40

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Solution

The fourth proportional to 144,328.60, 216,201.30 and 100,005.40 is: 149,806.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,328.60 : 216,201.30 = 100,005.40 : x
  2. Step 2: Convert to fraction form
    144,328.60/216,201.30 = 100,005.40/x
  3. Step 3: Cross multiply
    144,328.60x = 216,201.30 × 100,005.40
  4. Step 4: Simplify right side
    144,328.60x = 21,621,297,487.02
  5. Step 5: Solve for x
    x = 21,621,297,487.02/144,328.60
  6. Step 6: Final answer
    x = 149,806.05

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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.