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Finding the Fourth Proportional to 115,873.70, 173,810.55 and 45,743.90

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Solution

The fourth proportional to 115,873.70, 173,810.55 and 45,743.90 is: 68,615.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,873.70 : 173,810.55 = 45,743.90 : x
  2. Step 2: Convert to fraction form
    115,873.70/173,810.55 = 45,743.90/x
  3. Step 3: Cross multiply
    115,873.70x = 173,810.55 × 45,743.90
  4. Step 4: Simplify right side
    115,873.70x = 7,950,772,418.15
  5. Step 5: Solve for x
    x = 7,950,772,418.15/115,873.70
  6. Step 6: Final answer
    x = 68,615.85

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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.