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Finding the Fourth Proportional to 143,999.20, 216,229.20 and 97,458.40

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Solution

The fourth proportional to 143,999.20, 216,229.20 and 97,458.40 is: 146,343.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,999.20 : 216,229.20 = 97,458.40 : x
  2. Step 2: Convert to fraction form
    143,999.20/216,229.20 = 97,458.40/x
  3. Step 3: Cross multiply
    143,999.20x = 216,229.20 × 97,458.40
  4. Step 4: Simplify right side
    143,999.20x = 21,073,351,865.28
  5. Step 5: Solve for x
    x = 21,073,351,865.28/143,999.20
  6. Step 6: Final answer
    x = 146,343.53

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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.