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Finding the Fourth Proportional to 99,274.40, 148,939.40 and 40,151.60

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Solution

The fourth proportional to 99,274.40, 148,939.40 and 40,151.60 is: 60,238.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,274.40 : 148,939.40 = 40,151.60 : x
  2. Step 2: Convert to fraction form
    99,274.40/148,939.40 = 40,151.60/x
  3. Step 3: Cross multiply
    99,274.40x = 148,939.40 × 40,151.60
  4. Step 4: Simplify right side
    99,274.40x = 5,980,155,213.04
  5. Step 5: Solve for x
    x = 5,980,155,213.04/99,274.40
  6. Step 6: Final answer
    x = 60,238.64

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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.