Home / 103,005.12-154,520.64-36,429.60

Finding the Fourth Proportional to 103,005.12, 154,520.64 and 36,429.60

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Solution

The fourth proportional to 103,005.12, 154,520.64 and 36,429.60 is: 54,648.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,005.12 : 154,520.64 = 36,429.60 : x
  2. Step 2: Convert to fraction form
    103,005.12/154,520.64 = 36,429.60/x
  3. Step 3: Cross multiply
    103,005.12x = 154,520.64 × 36,429.60
  4. Step 4: Simplify right side
    103,005.12x = 5,629,125,106.94
  5. Step 5: Solve for x
    x = 5,629,125,106.94/103,005.12
  6. Step 6: Final answer
    x = 54,648.98

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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.