Home / 122,309.12-168,805.03-74,590.15

Finding the Fourth Proportional to 122,309.12, 168,805.03 and 74,590.15

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Solution

The fourth proportional to 122,309.12, 168,805.03 and 74,590.15 is: 102,945.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,309.12 : 168,805.03 = 74,590.15 : x
  2. Step 2: Convert to fraction form
    122,309.12/168,805.03 = 74,590.15/x
  3. Step 3: Cross multiply
    122,309.12x = 168,805.03 × 74,590.15
  4. Step 4: Simplify right side
    122,309.12x = 12,591,191,664.43
  5. Step 5: Solve for x
    x = 12,591,191,664.43/122,309.12
  6. Step 6: Final answer
    x = 102,945.65

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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.