Home / 102,655.20-154,256.16-55,306.64

Finding the Fourth Proportional to 102,655.20, 154,256.16 and 55,306.64

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Solution

The fourth proportional to 102,655.20, 154,256.16 and 55,306.64 is: 83,107.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,655.20 : 154,256.16 = 55,306.64 : x
  2. Step 2: Convert to fraction form
    102,655.20/154,256.16 = 55,306.64/x
  3. Step 3: Cross multiply
    102,655.20x = 154,256.16 × 55,306.64
  4. Step 4: Simplify right side
    102,655.20x = 8,531,389,908.90
  5. Step 5: Solve for x
    x = 8,531,389,908.90/102,655.20
  6. Step 6: Final answer
    x = 83,107.24

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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.