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Finding the Fourth Proportional to 152,940.60, 229,410.90 and 115,615.80

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Solution

The fourth proportional to 152,940.60, 229,410.90 and 115,615.80 is: 173,423.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,940.60 : 229,410.90 = 115,615.80 : x
  2. Step 2: Convert to fraction form
    152,940.60/229,410.90 = 115,615.80/x
  3. Step 3: Cross multiply
    152,940.60x = 229,410.90 × 115,615.80
  4. Step 4: Simplify right side
    152,940.60x = 26,523,524,732.22
  5. Step 5: Solve for x
    x = 26,523,524,732.22/152,940.60
  6. Step 6: Final answer
    x = 173,423.70

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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.