Home / 102,739.28-154,121.20-43,567.26

Finding the Fourth Proportional to 102,739.28, 154,121.20 and 43,567.26

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Solution

The fourth proportional to 102,739.28, 154,121.20 and 43,567.26 is: 65,356.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,739.28 : 154,121.20 = 43,567.26 : x
  2. Step 2: Convert to fraction form
    102,739.28/154,121.20 = 43,567.26/x
  3. Step 3: Cross multiply
    102,739.28x = 154,121.20 × 43,567.26
  4. Step 4: Simplify right side
    102,739.28x = 6,714,638,391.91
  5. Step 5: Solve for x
    x = 6,714,638,391.91/102,739.28
  6. Step 6: Final answer
    x = 65,356.10

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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.