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Finding the Fourth Proportional to 115,305.20, 173,030.70 and 67,920.20

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Solution

The fourth proportional to 115,305.20, 173,030.70 and 67,920.20 is: 101,923.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,305.20 : 173,030.70 = 67,920.20 : x
  2. Step 2: Convert to fraction form
    115,305.20/173,030.70 = 67,920.20/x
  3. Step 3: Cross multiply
    115,305.20x = 173,030.70 × 67,920.20
  4. Step 4: Simplify right side
    115,305.20x = 11,752,279,750.14
  5. Step 5: Solve for x
    x = 11,752,279,750.14/115,305.20
  6. Step 6: Final answer
    x = 101,923.24

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1.5x scale

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.