Home / 102,807.20-154,095.60-43,632.80

Finding the Fourth Proportional to 102,807.20, 154,095.60 and 43,632.80

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Solution

The fourth proportional to 102,807.20, 154,095.60 and 43,632.80 is: 65,400.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,807.20 : 154,095.60 = 43,632.80 : x
  2. Step 2: Convert to fraction form
    102,807.20/154,095.60 = 43,632.80/x
  3. Step 3: Cross multiply
    102,807.20x = 154,095.60 × 43,632.80
  4. Step 4: Simplify right side
    102,807.20x = 6,723,622,495.68
  5. Step 5: Solve for x
    x = 6,723,622,495.68/102,807.20
  6. Step 6: Final answer
    x = 65,400.31

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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.