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Finding the Fourth Proportional to 115,859.40, 173,745.90 and 45,724.20

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Solution

The fourth proportional to 115,859.40, 173,745.90 and 45,724.20 is: 68,569.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,859.40 : 173,745.90 = 45,724.20 : x
  2. Step 2: Convert to fraction form
    115,859.40/173,745.90 = 45,724.20/x
  3. Step 3: Cross multiply
    115,859.40x = 173,745.90 × 45,724.20
  4. Step 4: Simplify right side
    115,859.40x = 7,944,392,280.78
  5. Step 5: Solve for x
    x = 7,944,392,280.78/115,859.40
  6. Step 6: Final answer
    x = 68,569.25

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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.