Home / 103,454.71-155,178.99-28,579.36

Finding the Fourth Proportional to 103,454.71, 155,178.99 and 28,579.36

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Solution

The fourth proportional to 103,454.71, 155,178.99 and 28,579.36 is: 42,868.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,454.71 : 155,178.99 = 28,579.36 : x
  2. Step 2: Convert to fraction form
    103,454.71/155,178.99 = 28,579.36/x
  3. Step 3: Cross multiply
    103,454.71x = 155,178.99 × 28,579.36
  4. Step 4: Simplify right side
    103,454.71x = 4,434,916,219.65
  5. Step 5: Solve for x
    x = 4,434,916,219.65/103,454.71
  6. Step 6: Final answer
    x = 42,868.19

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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.