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Finding the Fourth Proportional to 115,409.70, 173,114.55 and 92,859.30

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Solution

The fourth proportional to 115,409.70, 173,114.55 and 92,859.30 is: 139,288.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,409.70 : 173,114.55 = 92,859.30 : x
  2. Step 2: Convert to fraction form
    115,409.70/173,114.55 = 92,859.30/x
  3. Step 3: Cross multiply
    115,409.70x = 173,114.55 × 92,859.30
  4. Step 4: Simplify right side
    115,409.70x = 16,075,295,932.82
  5. Step 5: Solve for x
    x = 16,075,295,932.82/115,409.70
  6. Step 6: Final answer
    x = 139,288.95

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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.