Home / 148,920.85-205,514.67-85,279.15

Finding the Fourth Proportional to 148,920.85, 205,514.67 and 85,279.15

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Solution

The fourth proportional to 148,920.85, 205,514.67 and 85,279.15 is: 117,687.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,920.85 : 205,514.67 = 85,279.15 : x
  2. Step 2: Convert to fraction form
    148,920.85/205,514.67 = 85,279.15/x
  3. Step 3: Cross multiply
    148,920.85x = 205,514.67 × 85,279.15
  4. Step 4: Simplify right side
    148,920.85x = 17,526,116,370.13
  5. Step 5: Solve for x
    x = 17,526,116,370.13/148,920.85
  6. Step 6: Final answer
    x = 117,687.46

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1.5x scale

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.