Home / 205,058.48-307,155.36-130,139.12

Finding the Fourth Proportional to 205,058.48, 307,155.36 and 130,139.12

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Solution

The fourth proportional to 205,058.48, 307,155.36 and 130,139.12 is: 194,934.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,058.48 : 307,155.36 = 130,139.12 : x
  2. Step 2: Convert to fraction form
    205,058.48/307,155.36 = 130,139.12/x
  3. Step 3: Cross multiply
    205,058.48x = 307,155.36 × 130,139.12
  4. Step 4: Simplify right side
    205,058.48x = 39,972,928,253.68
  5. Step 5: Solve for x
    x = 39,972,928,253.68/205,058.48
  6. Step 6: Final answer
    x = 194,934.29

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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.