Home / 128,203.36-192,270.48-58,012

Finding the Fourth Proportional to 128,203.36, 192,270.48 and 58,012

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Solution

The fourth proportional to 128,203.36, 192,270.48 and 58,012 is: 87,002.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,203.36 : 192,270.48 = 58,012 : x
  2. Step 2: Convert to fraction form
    128,203.36/192,270.48 = 58,012/x
  3. Step 3: Cross multiply
    128,203.36x = 192,270.48 × 58,012
  4. Step 4: Simplify right side
    128,203.36x = 11,153,995,085.76
  5. Step 5: Solve for x
    x = 11,153,995,085.76/128,203.36
  6. Step 6: Final answer
    x = 87,002.36

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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.