Home / 158,998.10-219,412.80-87,378.03

Finding the Fourth Proportional to 158,998.10, 219,412.80 and 87,378.03

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Solution

The fourth proportional to 158,998.10, 219,412.80 and 87,378.03 is: 120,579.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,998.10 : 219,412.80 = 87,378.03 : x
  2. Step 2: Convert to fraction form
    158,998.10/219,412.80 = 87,378.03/x
  3. Step 3: Cross multiply
    158,998.10x = 219,412.80 × 87,378.03
  4. Step 4: Simplify right side
    158,998.10x = 19,171,858,220.78
  5. Step 5: Solve for x
    x = 19,171,858,220.78/158,998.10
  6. Step 6: Final answer
    x = 120,579.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.