Home / 106,619.80-159,783.90-70,979.80

Finding the Fourth Proportional to 106,619.80, 159,783.90 and 70,979.80

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Solution

The fourth proportional to 106,619.80, 159,783.90 and 70,979.80 is: 106,372.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,619.80 : 159,783.90 = 70,979.80 : x
  2. Step 2: Convert to fraction form
    106,619.80/159,783.90 = 70,979.80/x
  3. Step 3: Cross multiply
    106,619.80x = 159,783.90 × 70,979.80
  4. Step 4: Simplify right side
    106,619.80x = 11,341,429,265.22
  5. Step 5: Solve for x
    x = 11,341,429,265.22/106,619.80
  6. Step 6: Final answer
    x = 106,372.64

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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.