Home / 148,821.18-205,408.62-85,195.68

Finding the Fourth Proportional to 148,821.18, 205,408.62 and 85,195.68

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Solution

The fourth proportional to 148,821.18, 205,408.62 and 85,195.68 is: 117,590.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,821.18 : 205,408.62 = 85,195.68 : x
  2. Step 2: Convert to fraction form
    148,821.18/205,408.62 = 85,195.68/x
  3. Step 3: Cross multiply
    148,821.18x = 205,408.62 × 85,195.68
  4. Step 4: Simplify right side
    148,821.18x = 17,499,927,058.76
  5. Step 5: Solve for x
    x = 17,499,927,058.76/148,821.18
  6. Step 6: Final answer
    x = 117,590.30

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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.