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Finding the Fourth Proportional to 144,720.40, 217,080.60 and 97,481.20

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Solution

The fourth proportional to 144,720.40, 217,080.60 and 97,481.20 is: 146,221.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,720.40 : 217,080.60 = 97,481.20 : x
  2. Step 2: Convert to fraction form
    144,720.40/217,080.60 = 97,481.20/x
  3. Step 3: Cross multiply
    144,720.40x = 217,080.60 × 97,481.20
  4. Step 4: Simplify right side
    144,720.40x = 21,161,277,384.72
  5. Step 5: Solve for x
    x = 21,161,277,384.72/144,720.40
  6. Step 6: Final answer
    x = 146,221.80

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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.