Home / 103,328.19-154,972.71-28,429.65

Finding the Fourth Proportional to 103,328.19, 154,972.71 and 28,429.65

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Solution

The fourth proportional to 103,328.19, 154,972.71 and 28,429.65 is: 42,639.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,328.19 : 154,972.71 = 28,429.65 : x
  2. Step 2: Convert to fraction form
    103,328.19/154,972.71 = 28,429.65/x
  3. Step 3: Cross multiply
    103,328.19x = 154,972.71 × 28,429.65
  4. Step 4: Simplify right side
    103,328.19x = 4,405,819,904.85
  5. Step 5: Solve for x
    x = 4,405,819,904.85/103,328.19
  6. Step 6: Final answer
    x = 42,639.09

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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.