Home / 142,903.03-214,399.16-86,039.27

Finding the Fourth Proportional to 142,903.03, 214,399.16 and 86,039.27

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Solution

The fourth proportional to 142,903.03, 214,399.16 and 86,039.27 is: 129,085.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,903.03 : 214,399.16 = 86,039.27 : x
  2. Step 2: Convert to fraction form
    142,903.03/214,399.16 = 86,039.27/x
  3. Step 3: Cross multiply
    142,903.03x = 214,399.16 × 86,039.27
  4. Step 4: Simplify right side
    142,903.03x = 18,446,747,215.01
  5. Step 5: Solve for x
    x = 18,446,747,215.01/142,903.03
  6. Step 6: Final answer
    x = 129,085.77

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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.