Home / 103,619.40-155,429.10-94,979.40

Finding the Fourth Proportional to 103,619.40, 155,429.10 and 94,979.40

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Solution

The fourth proportional to 103,619.40, 155,429.10 and 94,979.40 is: 142,469.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,619.40 : 155,429.10 = 94,979.40 : x
  2. Step 2: Convert to fraction form
    103,619.40/155,429.10 = 94,979.40/x
  3. Step 3: Cross multiply
    103,619.40x = 155,429.10 × 94,979.40
  4. Step 4: Simplify right side
    103,619.40x = 14,762,562,660.54
  5. Step 5: Solve for x
    x = 14,762,562,660.54/103,619.40
  6. Step 6: Final answer
    x = 142,469.10

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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.