Home / 228,155.30-342,256.42-86,120.21

Finding the Fourth Proportional to 228,155.30, 342,256.42 and 86,120.21

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Solution

The fourth proportional to 228,155.30, 342,256.42 and 86,120.21 is: 129,189.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,155.30 : 342,256.42 = 86,120.21 : x
  2. Step 2: Convert to fraction form
    228,155.30/342,256.42 = 86,120.21/x
  3. Step 3: Cross multiply
    228,155.30x = 342,256.42 × 86,120.21
  4. Step 4: Simplify right side
    228,155.30x = 29,475,194,764.25
  5. Step 5: Solve for x
    x = 29,475,194,764.25/228,155.30
  6. Step 6: Final answer
    x = 129,189.17

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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.